diff --git a/recipes.sql b/recipes.sql
new file mode 100644
index 0000000..437f207
--- /dev/null
+++ b/recipes.sql
@@ -0,0 +1,121 @@
+CREATE TABLE keylookup (
+	id INTEGER NOT NULL, 
+	word TEXT, 
+	item TEXT, 
+	ingkey TEXT, 
+	count INTEGER, 
+	PRIMARY KEY (id)
+);
+CREATE TABLE info (
+	version_super INTEGER, 
+	version_major INTEGER, 
+	version_minor INTEGER, 
+	last_access INTEGER, 
+	rowid INTEGER NOT NULL, 
+	PRIMARY KEY (rowid)
+);
+CREATE TABLE recipe (
+	id INTEGER NOT NULL, 
+	title TEXT, 
+	instructions TEXT, 
+	modifications TEXT, 
+	cuisine TEXT, 
+	rating INTEGER, 
+	description TEXT, 
+	source TEXT, 
+	preptime INTEGER, 
+	cooktime INTEGER, 
+	servings FLOAT, 
+	yields FLOAT, 
+	yield_unit VARCHAR(32), 
+	image BLOB, 
+	thumb BLOB, 
+	deleted BOOLEAN, 
+	recipe_hash VARCHAR(32), 
+	ingredient_hash VARCHAR(32), 
+	link TEXT, 
+	last_modified INTEGER, 
+	PRIMARY KEY (id), 
+	CHECK (deleted IN (0, 1))
+);
+CREATE TABLE plugin_info (
+	plugin TEXT, 
+	id INTEGER NOT NULL, 
+	version_super INTEGER, 
+	version_major INTEGER, 
+	version_minor INTEGER, 
+	plugin_version VARCHAR(32), 
+	PRIMARY KEY (id)
+);
+CREATE TABLE categories (
+	id INTEGER NOT NULL, 
+	recipe_id INTEGER, 
+	category TEXT, 
+	PRIMARY KEY (id), 
+	FOREIGN KEY(recipe_id) REFERENCES recipe (id)
+);
+CREATE TABLE ingredients (
+	id INTEGER NOT NULL, 
+	recipe_id INTEGER, 
+	refid INTEGER, 
+	unit TEXT, 
+	amount FLOAT, 
+	rangeamount FLOAT, 
+	item TEXT, 
+	ingkey TEXT, 
+	optional BOOLEAN, 
+	shopoptional INTEGER, 
+	inggroup TEXT, 
+	position INTEGER, 
+	deleted BOOLEAN, 
+	PRIMARY KEY (id), 
+	CHECK (deleted IN (0, 1)), 
+	FOREIGN KEY(recipe_id) REFERENCES recipe (id), 
+	FOREIGN KEY(refid) REFERENCES recipe (id), 
+	CHECK (optional IN (0, 1))
+);
+CREATE TABLE IF NOT EXISTS "pantry" (
+id INTEGER NOT NULL, 
+ingkey TEXT(32), 
+pantry BOOLEAN, 
+PRIMARY KEY (id), 
+CHECK (pantry IN (0, 1))
+);
+CREATE TABLE unitdict (
+id INTEGER NOT NULL, 
+ukey VARCHAR(150), 
+value VARCHAR(150), 
+PRIMARY KEY (id)
+);
+CREATE TABLE crossunitdict (
+id INTEGER NOT NULL, 
+cukey VARCHAR(150), 
+value VARCHAR(150), 
+PRIMARY KEY (id)
+);
+CREATE TABLE density (
+id INTEGER NOT NULL, 
+dkey VARCHAR(150), 
+value VARCHAR(150), 
+PRIMARY KEY (id)
+);
+CREATE TABLE shopcatsorder (
+id INTEGER NOT NULL, 
+shopcategory TEXT(32), 
+position INTEGER, 
+PRIMARY KEY (id)
+);
+CREATE TABLE convtable (
+id INTEGER NOT NULL, 
+ckey VARCHAR(150), 
+value VARCHAR(150), 
+PRIMARY KEY (id)
+);
+CREATE TABLE IF NOT EXISTS "shopcats" (
+	id INTEGER NOT NULL, 
+	ingkey TEXT(32), 
+	shopcategory TEXT, 
+	position INTEGER, 
+	PRIMARY KEY (id)
+);
+CREATE TABLE IF NOT EXISTS "recipe_ingredients" ("Recipe_id" integer not null, "ingredientHash_id" integer not null, unique ("ingredientHash_id"));
diff --git a/src/main/java/com/mousetech/gourmetj/AdminMainBean.java b/src/main/java/com/mousetech/gourmetj/AdminMainBean.java
index ec2fe5f..31a6311 100644
--- a/src/main/java/com/mousetech/gourmetj/AdminMainBean.java
+++ b/src/main/java/com/mousetech/gourmetj/AdminMainBean.java
@@ -101,17 +101,15 @@ public class AdminMainBean implements Serializable {
 	public void resetSuggestions() {
 		suggestionList = null;
 	}
-	
+
 	public List<String> searchSuggestionList(String query) {
 		if (suggestionList == null) {
 			switch (this.userSession.getSearchType()) {
 			case rst_BY_CATEGORY:
-				suggestionList =
-						recipeService.findCategories();
+				suggestionList = recipeService.findCategories();
 				break;
 			case rst_BY_CUISINE:
-				suggestionList =
-				 		recipeService.findCuisines();
+				suggestionList = recipeService.findCuisines();
 				break;
 			default:
 				suggestionList = new ArrayList<String>(1);
@@ -119,7 +117,7 @@ public class AdminMainBean implements Serializable {
 		}
 		return suggestionList;
 	}
-	
+
 	/**/
 	transient DataModel<Recipe> searchResults;
 
@@ -220,6 +218,14 @@ public class AdminMainBean implements Serializable {
 		return "detailEdit?faces-redirect=true";
 	}
 
+	/**
+	 * Navigate to "More features" page (shopping list and
+	 * maint.)
+	 */
+	public String doMore() {
+		return "shoppingList.jsf";
+	}
+
 	/**
 	 * Show selected recipe
 	 * 
diff --git a/src/main/java/com/mousetech/gourmetj/RecipeDetailBean.java b/src/main/java/com/mousetech/gourmetj/RecipeDetailBean.java
index 9b6d326..5f95e1c 100644
--- a/src/main/java/com/mousetech/gourmetj/RecipeDetailBean.java
+++ b/src/main/java/com/mousetech/gourmetj/RecipeDetailBean.java
@@ -243,6 +243,9 @@ public class RecipeDetailBean implements Serializable {
 			buildIngredientFacade(recipe.getIngredientHash()));
 		stringifyCategories(recipe);
 
+		this.shop = this.getUserSession().getShoppingList()
+			.contains(recipe);
+
 		log.info("Set recipe: " + this.recipe);
 	}
 
@@ -262,8 +265,8 @@ public class RecipeDetailBean implements Serializable {
 	}
 
 	/**
-	 * Categories are a Set attached to recipe. Build
-	 * a displayable comma-separated list of them.
+	 * Categories are a Set attached to recipe. Build a
+	 * displayable comma-separated list of them.
 	 * 
 	 * @param recipe Recipe to get categories from.
 	 * 
@@ -667,6 +670,26 @@ public class RecipeDetailBean implements Serializable {
 			.getWrappedData();
 	}
 
+	private boolean shop = false;
+
+	public boolean isShop() {
+		return shop;
+	}
+
+	/**
+	 * Add/remove recipe to shopping list (toggle)
+	 */
+	public void doShop() {
+		shop = !shop;
+		List<Recipe> shoppingList =
+				userSession.getShoppingList();
+		if (shop) {
+			shoppingList.add(recipe);
+		} else {
+			shoppingList.remove(recipe);
+		}
+	}
+
 	/**
 	 * Save the recipe.
 	 * 
diff --git a/src/main/java/com/mousetech/gourmetj/ShopIngredient.java b/src/main/java/com/mousetech/gourmetj/ShopIngredient.java
new file mode 100644
index 0000000..8d8321a
--- /dev/null
+++ b/src/main/java/com/mousetech/gourmetj/ShopIngredient.java
@@ -0,0 +1,165 @@
+package com.mousetech.gourmetj;
+
+import com.mousetech.gourmetj.utils.IngredientDigester;
+import com.mousetech.gourmetj.utils.IngredientDigester.IngredientAmountFormat;
+
+public class ShopIngredient implements Comparable<Object> {
+	/**
+	 * Constructor.
+	 * 
+	 * @param shopCat
+	 * @param ingkey
+	 */
+	public ShopIngredient(	String shopCat, String item,
+							String ingkey) {
+		this.shopCat = shopCat;
+		this.ingkey = ingkey;
+	}
+
+	/**
+	 * Constructor.
+	 * 
+	 * @param amount
+	 * @param unit
+	 * @param item
+	 * @param ingkey
+	 * @param shopCat
+	 */
+	public ShopIngredient(	Double amount, String unit,
+							String item, String ingkey,
+							String shopCat) {
+		this.amount = amount;
+		this.unit = unit;
+		this.item = item;
+		this.ingkey = ingkey;
+		this.shopCat = shopCat;
+	}
+
+	private String shopCat;
+
+	/**
+	 * @return the shopCat
+	 */
+	public String getShopCat() {
+		return shopCat;
+	}
+
+	/**
+	 * @param shopCat the shopCat to set
+	 */
+	public void setShopCat(String shopCat) {
+		this.shopCat = shopCat;
+	}
+
+	/**
+	 * @return the ingkey
+	 */
+	public String getIngkey() {
+		return ingkey;
+	}
+
+	/**
+	 * @param ingkey the ingkey to set
+	 */
+	public void setIngkey(String ingkey) {
+		this.ingkey = ingkey;
+	}
+
+	/**
+	 * @return the amount
+	 */
+	public Double getAmount() {
+		return amount;
+	}
+
+	/**
+	 * @param amount the amount to set
+	 */
+	public void setAmount(Double amount) {
+		this.amount = amount;
+	}
+
+	/**
+	 * @return the displayAmount
+	 */
+	public String getDisplayAmount() {
+		Double amt = this.getAmount();
+		if ( amt == null) {
+			return "";
+		}
+		return IngredientDigester.displayAmount(
+			IngredientAmountFormat.IA_TEXT, amt,
+			null);
+	}
+
+	/**
+	 * @return the unit
+	 */
+	public String getUnit() {
+		return unit;
+	}
+
+	/**
+	 * @param unit the unit to set
+	 */
+	public void setUnit(String unit) {
+		this.unit = unit;
+	}
+
+	private String item;
+
+	/**
+	 * @return the item
+	 */
+	public String getItem() {
+		return item;
+	}
+
+	private String ingkey;
+	private Double amount;
+	private String displayAmount;
+	private String unit;
+
+	@Override
+	public int compareTo(Object o) {
+		if ((o == null) || !(o instanceof ShopIngredient)) {
+			throw new RuntimeException(
+					"Invalid shipIngredient comparison");
+		}
+		ShopIngredient o1 = (ShopIngredient) o;
+		int i = relate(this.getItem(), o1.getItem());
+		if (i != 0) {
+			return i;
+		}
+		i = relate(this.getShopCat(), o1.getShopCat());
+		if (i != 0) {
+			return i;
+		}
+		// TODO: normalize case, singular/plural/abbreviations
+		i = relate(this.getUnit(), o1.getUnit());
+		if (i != 0) {
+			return i;
+		}
+		return i; // ZERO
+	}
+
+	private int relate(String item2, String item3) {
+		if ((item2 == null) && (item3 == null)) {
+			return 0;
+		}
+		if (item2 == null) {
+			return -1;
+		}
+		if (item3 == null) {
+			return 1;
+		}
+		return item2.compareTo(item3);
+	}
+
+	@Override
+	public String toString() {
+		return this.getAmount() + " " + this.getUnit() + " "
+				+ this.getItem() + " " + this.getIngkey() + " "
+				+ this.getShopCat();
+	}
+}
diff --git a/src/main/java/com/mousetech/gourmetj/ShoppingListBean.java b/src/main/java/com/mousetech/gourmetj/ShoppingListBean.java
new file mode 100644
index 0000000..6dbe31a
--- /dev/null
+++ b/src/main/java/com/mousetech/gourmetj/ShoppingListBean.java
@@ -0,0 +1,397 @@
+package com.mousetech.gourmetj;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintWriter;
+import java.io.Serializable;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import javax.annotation.PostConstruct;
+import javax.faces.view.ViewScoped;
+import javax.inject.Inject;
+import javax.inject.Named;
+
+import org.apache.commons.lang3.StringUtils;
+import org.primefaces.model.ByteArrayContent;
+import org.primefaces.model.DefaultStreamedContent;
+import org.primefaces.model.StreamedContent;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import com.mousetech.gourmetj.persistence.dao.ShopcatRepository;
+import com.mousetech.gourmetj.persistence.model.Ingredient;
+import com.mousetech.gourmetj.persistence.model.Recipe;
+import com.mousetech.gourmetj.persistence.model.Shopcat;
+import com.mousetech.gourmetj.utils.YamlShoppingList;
+
+@Named
+@ViewScoped
+public class ShoppingListBean implements Serializable {
+
+	public class RecipeReference {
+
+		private int count;
+		private Recipe recipe;
+
+		/**
+		 * Constructor Constructor.
+		 * 
+		 * @param r Recipe to reference (from Shopping List)
+		 */
+		public RecipeReference(Recipe r) {
+			count = 1;
+			recipe = r;
+		}
+
+		/**
+		 * @return the count
+		 */
+		public int getCount() {
+			return count;
+		}
+
+		/**
+		 * @param count the count to set
+		 */
+		public void setCount(int count) {
+			this.count = count;
+		}
+
+		/**
+		 * @return the recipe
+		 */
+		public Recipe getRecipe() {
+			return recipe;
+		}
+
+		/**
+		 * @param recipe the recipe to set
+		 */
+		public void setRecipe(Recipe recipe) {
+			this.recipe = recipe;
+		}
+
+	}
+
+	/**
+	 * Serial version for session save/restore
+	 */
+	private static final long serialVersionUID =
+			7449440266704831598L;
+
+	/* Logger */
+
+	@SuppressWarnings("unused")
+	private static final Logger log =
+			LoggerFactory.getLogger(ShoppingListBean.class);
+
+	@Inject
+	private UserSession userSession;
+
+	private List<ShopIngredient> siList;
+
+	private List<RecipeReference> recipeList;
+
+	@PostConstruct
+	public void init() {
+		// Load up details on recipes
+		this.siList = new ArrayList<ShopIngredient>(30);
+		buildMaps();
+	}
+
+	public List<RecipeReference> getRecipeList() {
+		if (this.recipeList == null) {
+			this.recipeList = loadRecipeList();
+		}
+		return this.recipeList;
+	}
+
+	private List<RecipeReference> loadRecipeList() {
+		List<RecipeReference> list =
+				userSession.getShoppingList().stream()
+					.map(r -> new RecipeReference(r))
+					.collect(Collectors.toList());
+		return list;
+	}
+
+	public List<ShopIngredient> getIngredientList() {
+		return this.siList;
+	}
+
+	private void buildMaps() {
+		this.siList = new ArrayList<ShopIngredient>(30);
+		for (RecipeReference r : this.getRecipeList()) {
+			buildMapsFor(r);
+		}
+		// Now consolidate amounts and sort by
+		// shopcat/item/ingkey
+		optimizeIngredients(this.siList);
+
+		this.siList.sort(new ShopclassComparator());
+	}
+
+	/**
+	 * Run the ingredient list for the selected recipe and add
+	 * them to siList
+	 * 
+	 * @param r
+	 * 
+	 * @see #buildMaps()
+	 */
+	private void buildMapsFor(RecipeReference r) {
+		final int multiplier = r.getCount();
+		if (multiplier == 0) {
+			return;
+		}
+		for (Ingredient ing : r.getRecipe()
+			.getIngredientHash()) {
+			String ingkey = ing.getIngkey();
+			if (StringUtils.isBlank(ingkey)) {
+				continue;
+			}
+			String shopCatName = ing.getShopCat() != null
+					? ing.getShopCat().getShopcategory()
+					: null;
+			ShopIngredient sing;
+			try {
+				Double amt = ing.getAmount();
+				if (multiplier > 1 && (amt != null)) {
+					amt *= multiplier;
+				}
+				sing = new ShopIngredient(amt, ing.getUnit(),
+						ing.getItem(), ing.getIngkey(),
+						shopCatName);
+				siList.add(sing);
+			} catch (Exception e) {
+				log.error("Unable to create ShopIngredient for "
+						+ r.getRecipe() + " Ingredient " + ing);
+				e.printStackTrace();
+			}
+		}
+	}
+
+	/**
+	 * Sort ShopIngredient list, then optimize it by
+	 * consolidating amounts where possible.
+	 * 
+	 * @param victim List to optimize
+	 * 
+	 *               #TestedBy @see ShoppingListBeanTest
+	 */
+	static void optimizeIngredients(
+			List<ShopIngredient> victim) {
+		victim.sort(null);
+		for (int i = 0; i < (victim.size() - 1); i++) {
+			ShopIngredient si = victim.get(i);
+			ShopIngredient si2 = victim.get(i + 1);
+			if (si.compareTo(si2) == 0) {
+				si.setAmount(si.getAmount() + si2.getAmount());
+				victim.remove(si2); // reduces size()
+			}
+		}
+	}
+
+	class ShopclassComparator
+			implements Comparator<ShopIngredient> {
+
+		@Override
+		public int compare(ShopIngredient ing1,
+				ShopIngredient ing2) {
+			int i = 0;
+			i = relate(ing1.getShopCat(), ing2.getShopCat());
+			if (i != 0) {
+				return i;
+			}
+			i = relate(ing1.getItem(), ing2.getItem());
+			if (i != 0) {
+				return i;
+			}
+			i = relate(ing1.getIngkey(), ing2.getIngkey());
+			if (i != 0) {
+				return i;
+			}
+			return 0;
+		}
+
+		private int relate(String item2, String item3) {
+			if ((item2 == null) && (item3 == null)) {
+				return 0;
+			}
+			if (item2 == null) {
+				return -1;
+			}
+			if (item3 == null) {
+				return 1;
+			}
+			return item2.compareTo(item3);
+		}
+	}
+
+	public StreamedContent getDlIngredientList() {
+		return YamlShoppingList
+			.createDownload(getIngredientList());
+	}
+
+	// =============================================
+	private List<String> shopcatList;
+
+	public List<String> getShopcatList() {
+		if (shopcatList == null) {
+			shopcatList = loadShopcatList();
+		}
+		return shopcatList;
+	}
+
+	@Inject
+	ShopcatRepository shopcatRepository;
+
+	private List<String> loadShopcatList() {
+		return shopcatRepository.findDistinctCategoryNative();
+//			.findAllByOrderByShopcategoryAsc();
+	}
+
+	private Shopcat xeditShopcat = new Shopcat();
+
+	private String oldShopcategoryName;
+
+	/**
+	 * @return the editShopcat
+	 */
+	public Shopcat getEditShopcat() {
+		return xeditShopcat;
+	}
+
+	public void doEditShopcat(int scId) {
+//		xeditShopcat = null;
+//		final List<Shopcat> scl = getShopcatList();
+//		for (Shopcat sc : scl) {
+//			if (sc.getId() == scId) {
+//				xeditShopcat = sc;
+//				this.oldShopcategoryName = sc.getShopcategory();
+//				if (sc.getPosition() == null) {
+//					sc.setPosition(0);
+//				}
+//				return;
+//			}
+//		}
+//		log.error("SHOPCAT " + scId + " NOT FOUND");
+	}
+
+	public void ajaxOnClickShopcatIngkey() {
+		// Saves 1 shopcat/ingkey
+		this.shopcatRepository.save(xeditShopcat);
+		this.shopcatList = null;
+	}
+
+	/**
+	 * Updates all ingredient keys for shopcat name-change. Note
+	 * that once done, this cannot be undone!
+	 */
+	public void ajaxOnClickShopcat() {
+		this.shopcatRepository.UpdateShopcats(
+			this.oldShopcategoryName,
+			xeditShopcat.getShopcategory());
+		this.shopcatList = null;
+	}
+
+	/**
+	 * Primefaces AJAX listener for changes to amount values of
+	 * recipes the recipe list. Forces re-computation of
+	 * ingredient requirements.
+	 */
+	public void pfAmountChange() {
+		buildMaps();
+	}
+
+	// ===
+	private String selectedShopcat;
+
+	/**
+	 * @return the selectedShopcat
+	 */
+	public String getSelectedShopcat() {
+		return selectedShopcat;
+	}
+
+	/**
+	 * @param selectedShopcat the selectedShopcat to set
+	 */
+	public void setSelectedShopcat(String selectedShopcat) {
+		this.selectedShopcat = selectedShopcat;
+		this.ingkeyList = null;
+	}
+
+	private List<String> selectedIngkey;
+
+	/**
+	 * @return the selectedIngkey
+	 */
+	public List<String> getSelectedIngkey() {
+		return selectedIngkey;
+	}
+
+	/**
+	 * @param selectedIngkey the selectedIngkey to set
+	 */
+	public void setSelectedIngkey(List<String> selectedIngkey) {
+		this.selectedIngkey = selectedIngkey;
+	}
+
+	private List<String> ingkeyList;
+
+	/**
+	 * @return the ingkeyList
+	 */
+	public List<String> getIngkeyList() {
+		if (ingkeyList == null) {
+			ingkeyList = loadIngkeyListFor(selectedShopcat);
+		}
+		return ingkeyList;
+	}
+
+	private List<String> loadIngkeyListFor(
+			String selectedShopcat2) {
+		List<String> list = this.shopcatRepository
+			.findByIngkeySorted(selectedShopcat2);
+		return list;
+	}
+
+	private String newShopcat;
+
+	/**
+	 * @return the newShopcat
+	 */
+	public String getNewShopcat() {
+		return newShopcat;
+	}
+
+	/**
+	 * @param newShopcat the newShopcat to set
+	 */
+	public void setNewShopcat(String newShopcat) {
+		this.newShopcat = newShopcat;
+	}
+
+	public List<String> suggestShopcat(String query) {
+		return this.shopcatList;
+	}
+
+	public void doChangeShopcat() {
+		String oldCat = this.getSelectedShopcat();
+		String newCat = this.getNewShopcat();
+		if (oldCat.equals(newCat)) {
+			return; // effective NO-OP
+		}
+		newCat = newCat.trim();
+		if (StringUtils.isBlank(newCat)) {
+			this.shopcatRepository
+				.deleteShopcatFor(this.getSelectedIngkey());
+		} else {
+			this.shopcatRepository.updateShopcatFor(newCat,
+				this.getSelectedIngkey());
+		}
+	}
+
+}
diff --git a/src/main/java/com/mousetech/gourmetj/UserSession.java b/src/main/java/com/mousetech/gourmetj/UserSession.java
index ec8acb4..5d8e0c6 100644
--- a/src/main/java/com/mousetech/gourmetj/UserSession.java
+++ b/src/main/java/com/mousetech/gourmetj/UserSession.java
@@ -182,6 +182,13 @@ public class UserSession implements Serializable {
 	// Session timeout, ms (25 minutes)
 	long sessionTimeoutInterval = 25 * 60_000L;
 
+	/**
+	 * When you click the "shop" button on a recipe, it
+	 * gets added to this list. Note that it's the fully-expanded
+	 * recipe!
+	 */
+	private List<Recipe> shoppingList = new ArrayList<Recipe>();
+
 	/**
 	 * @return the sessionTimeoutInterval
 	 */
@@ -199,4 +206,8 @@ public class UserSession implements Serializable {
 		log.warn("Session Idle listener logout");
 		return "/main.jsf";
 	}
+
+	public List<Recipe> getShoppingList() {
+		return this.shoppingList ;
+	}
 }
diff --git a/src/main/java/com/mousetech/gourmetj/persistence/dao/ShopcatRepository.java b/src/main/java/com/mousetech/gourmetj/persistence/dao/ShopcatRepository.java
index 164fa39..576a784 100644
--- a/src/main/java/com/mousetech/gourmetj/persistence/dao/ShopcatRepository.java
+++ b/src/main/java/com/mousetech/gourmetj/persistence/dao/ShopcatRepository.java
@@ -2,15 +2,18 @@ package com.mousetech.gourmetj.persistence.dao;
 
 import java.util.List;
 
+import javax.transaction.Transactional;
+
 import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Modifying;
 import org.springframework.data.jpa.repository.Query;
 import org.springframework.stereotype.Repository;
 
 import com.mousetech.gourmetj.persistence.model.Shopcat;
 
 /**
- * JpaRepository for Shopping Categories, which relate ManyToOne to Ingredient.
- * Service method is @see RecipeService
+ * JpaRepository for Shopping Categories, which relate ManyToOne
+ * to Ingredient. Service method is @see RecipeService
  * 
  * @author timh
  * @since Dec 28, 2021
@@ -28,7 +31,27 @@ public interface ShopcatRepository
 	@Query(value = SQL_FIND_CATEGORIES, nativeQuery = true)
 	public List<String> findDistinctCategoryNative();
 
+	@Transactional
+	@Query(value = "UPDATE Shopcat set shopcategory = :newCatname WHERE shopcategory = :oldCatname")
+	@Modifying
+	public int UpdateShopcats(String oldCatname,
+			String newCatname);
+
 	public Shopcat findShopcatByIngkey(String ingkey);
 
 	public void deleteByIngkey(String key);
+
+	public List<Shopcat> findAllByOrderByShopcategoryAsc();
+
+	@Query(value = "SELECT s.ingkey FROM Shopcat s WHERE s.shopcategory = :shopcat ORDER BY s.ingkey")
+	public List<String> findByIngkeySorted(String shopcat);
+
+	@Transactional
+	@Query(value = "UPDATE Shopcat set shopcategory = :newCat WHERE  ingkey IN :selectedIngkey")
+	@Modifying
+	public void updateShopcatFor(String newCat, List<String> selectedIngkey);
+
+	@Transactional
+	@Query(value = "DELETE Shopcat WHERE  ingkey IN :selectedIngkey")
+	@Modifying	public void deleteShopcatFor(List<String> selectedIngkey);
 }
diff --git a/src/main/java/com/mousetech/gourmetj/utils/YamlShoppingList.java b/src/main/java/com/mousetech/gourmetj/utils/YamlShoppingList.java
new file mode 100644
index 0000000..61c23e9
--- /dev/null
+++ b/src/main/java/com/mousetech/gourmetj/utils/YamlShoppingList.java
@@ -0,0 +1,71 @@
+package com.mousetech.gourmetj.utils;
+
+import java.io.ByteArrayOutputStream;
+import java.io.PrintWriter;
+import java.util.List;
+
+import org.apache.commons.lang3.StringUtils;
+import org.primefaces.model.ByteArrayContent;
+import org.primefaces.model.StreamedContent;
+
+import com.mousetech.gourmetj.ShopIngredient;
+
+/**
+ * Construct a Primefaces file output content for an ingredient
+ * list in YAML format.
+ * 
+ * @author timh
+ * @since Jan 15, 2022
+ */
+
+public class YamlShoppingList {
+
+	public static StreamedContent createDownload(
+			List<ShopIngredient> ingredientList) {
+		ByteArrayOutputStream ary = new ByteArrayOutputStream();
+		PrintWriter wtr = new PrintWriter(ary);
+		wtr.println("---");
+		formatContent(wtr, ingredientList);
+		wtr.close();
+		byte[] bas = ary.toByteArray();
+
+		StreamedContent dlList = new ByteArrayContent(bas,
+				"text/text", "shopping_list.yml");
+		return dlList;
+	}
+
+	/**
+	 * Output line items in the ingredient list with topics for
+	 * each Shopping Category.
+	 * 
+	 * @param wtr            Output Writer
+	 * @param ingredientList Ingredient list to output.
+	 */
+	private static void formatContent(PrintWriter wtr,
+			List<ShopIngredient> ingredientList) {
+		String oldShopcat = null;
+		for (ShopIngredient ing : ingredientList) {
+			String newShopcat = ing.getShopCat();
+			if (StringUtils.isBlank(newShopcat)) {
+				newShopcat = "Unassigned";
+			}
+			if (!StringUtils.equals(newShopcat, oldShopcat)) {
+				wtr.println(newShopcat + ":");
+				oldShopcat = newShopcat;
+			}
+			wtr.print("  -  ");
+			String displa = ing.getDisplayAmount();
+			wtr.print(displa);
+			if (!displa.isBlank()) {
+				wtr.print(' ');
+			}
+			String unit = ing.getUnit();
+			if (StringUtils.isNotBlank(unit)) {
+				wtr.print(unit);
+				wtr.print(' ');
+			}
+			wtr.println(ing.getItem());
+		}
+	}
+
+}
diff --git a/src/main/resources/META-INF/resources/WEB-INF/layout/layout.xhtml b/src/main/resources/META-INF/resources/WEB-INF/layout/layout.xhtml
index 5f66996..800c7d5 100644
--- a/src/main/resources/META-INF/resources/WEB-INF/layout/layout.xhtml
+++ b/src/main/resources/META-INF/resources/WEB-INF/layout/layout.xhtml
@@ -21,18 +21,23 @@
                 <h1>
                     <ui:insert name="title">Gourmet Recipe Manager (web version)</ui:insert>
                 </h1>
+                <p:ajaxStatus onerror="PF('opError').show()"/>
                 <ui:insert name="content">
                     <ui:include src="content.xhtml" />
                 </ui:insert>
-            
-        (C) 2021 Tim Holloway, Licensed under the <a
-                    href="http://www.apache.org/licenses/LICENSE-2.0"
-                >Apache License, Version 2.0</a>.
-              <p>Based on Gourmet Recipe Manager by T. Hinkle</p>
-                <h:form id="ftmTimeout">
+                <!--  -->
+                <div id="footer">
+                    (C) 2021 Tim Holloway, Licensed under the <a
+                        href="http://www.apache.org/licenses/LICENSE-2.0"
+                    >Apache License, Version 2.0</a>.
+                    <p>Based on Gourmet Recipe Manager by T.
+                        Hinkle</p>
+                </div>
+                <!--  -->
+                <h:form id="frmTimeout">
                     <p:idleMonitor
                         timeout="#{userSession.sessionTimeoutInterval}"
-                        onidle="PF('sessionExpiredConfirmation').show()"
+                        onidle="PF('dlgSessionExpired').show()"
                     >
                         <p:ajax event="idle"
                             listener="#{userSession.sessionIdleListener}"
@@ -43,12 +48,12 @@
                         message="Your session has expired."
                         header="#{msgs['confirmDialog.initiatingDestroyProcess.label']}"
                         severity="alert"
-                        widgetVar="sessionExpiredConfirmation"
+                        widgetVar="dlgSessionExpired"
                         style="z-index: 25000"
                     >
                         <p:commandButton id="cmdExpiredOK"
                             value="OK" action="/main.jsf"
-                            oncomplete="PF('sessionExpiredConfirmation').hide()"
+                            oncomplete="PF('dlgSessionExpired').hide()"
                         />
                     </p:confirmDialog>
                 </h:form>
@@ -60,7 +65,7 @@
                         severity="alert" widgetVar="opError"
                     >
                         <p:commandButton value="OK"
-                            oncomplete="PF('cd').hide()"
+                            oncomplete="PF('opError').hide()"
                         />
                     </p:confirmDialog>
                 </h:form>
diff --git a/src/main/resources/META-INF/resources/WEB-INF/layout/misctabs/ingshopkey.xhtml b/src/main/resources/META-INF/resources/WEB-INF/layout/misctabs/ingshopkey.xhtml
new file mode 100644
index 0000000..7296161
--- /dev/null
+++ b/src/main/resources/META-INF/resources/WEB-INF/layout/misctabs/ingshopkey.xhtml
@@ -0,0 +1,96 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE html>
+<html xmlns:h="http://xmlns.jcp.org/jsf/html"
+    xmlns:f="http://xmlns.jcp.org/jsf/core"
+    xmlns:ui="http://java.sun.com/jsf/facelets"
+    xmlns:p="http://primefaces.org/ui"
+    xmlns:c="http://xmlns.jcp.org/jstl"
+>
+<!-- === Edit ingkey/shopcat === -->
+<h:form id="frmIsk">
+    <p:panelGrid>
+        <p:row>
+            <p:column>
+                <p:outputLabel for="ctlScSel"
+                    value="Shopping Category"
+                />
+            </p:column>
+            <p:column>
+                <p:outputLabel for="ctlIngkeySel"
+                    value="Ingredient Key"
+                />
+            </p:column>
+        </p:row>
+        <p:row style="vertical-align: top">
+            <p:column>
+                <p:selectOneListbox id="ctlScSel"
+                    style="width: 240px"
+                    value="#{shoppingListBean.selectedShopcat}"
+                >
+                    <f:selectItems
+                        value="#{shoppingListBean.shopcatList}"
+                    />
+                    <p:ajax update="ctlIngkeySel" event="change" />
+                </p:selectOneListbox>
+            </p:column>
+            <p:column>
+                <h:selectManyListbox id="ctlIngkeySel"
+                    style="width: 240px"
+                    value="#{shoppingListBean.selectedIngkey}"
+                    label="Ingcat"
+                >
+                    <f:selectItems
+                        value="#{shoppingListBean.ingkeyList}"
+                    />
+                    <p:ajax event="change" update="ctlChangeCat"/>
+                </h:selectManyListbox>
+            </p:column>
+        </p:row>
+        <p:row>
+            <p:column>
+                <p:outputLabel
+                    value="Change shopping category to:"
+                />
+            </p:column>
+            <p:column>
+                <p:autoComplete
+                    value="#{shoppingListBean.newShopcat}"
+                    autoSelection="false" forceSelection="false"
+                    maxResults="12"
+                    completeMethod="#{shoppingListBean.suggestShopcat}"
+                />
+            </p:column>
+        </p:row>
+        <p:row>
+            <p:column>
+                <p:commandButton id="ctlChangeCat" value="Change..."
+                    disabled="#{empty shoppingListBean.selectedIngkey}"
+                    onclick="PF('dlgOkRecat').show()"
+                />
+            </p:column>
+            <p:column>
+                <h:outputText value="" />
+            </p:column>
+        </p:row>
+    </p:panelGrid>
+</h:form>
+<!--  -->
+<h:form id="frmDelete">
+    <p:confirmDialog closable="false" id="dlgOkRecat"
+        header="Confirm Change - CANNOT UNDO"
+        message="OK to CHANGE Shopping Category for these Ingredient Keys?"
+        severity="alert" widgetVar="dlgOkRecat"
+        style="z-index: 25000"
+    >
+        <p:commandButton id="dlgOK" value="OK"
+            oncomplete="PF('dlgOkRecat').hide()"
+            action="#{shoppingListBean.doChangeShopcat}"
+            update="@form:@parent:frmIsk:ctlScSel @form:@parent:frmIsk:ctlIngkeySel"
+            immediate="true"
+        />
+        <p:commandButton id="dlgCancel" value="Cancel"
+            onclick="PF('dlgOkRecat').hide()"
+        />
+    </p:confirmDialog>
+</h:form>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/META-INF/resources/css/style.css b/src/main/resources/META-INF/resources/css/style.css
index 2c80602..fc7c387 100644
--- a/src/main/resources/META-INF/resources/css/style.css
+++ b/src/main/resources/META-INF/resources/css/style.css
@@ -13,7 +13,16 @@
 	font-weight: bold;
 }
 
+.greenButton {
+	background-color: green !important;
+}
+
 textarea {
 	font-family: 'latoregular', 'Trebuchet MS,Arial,Helvetica,sans-serif';
 	font-size: 1em
+}
+
+#footer {
+    bottom: 90px;
+    width: 100%;
 }
\ No newline at end of file
diff --git a/src/main/resources/META-INF/resources/editShopcatList.xhtml b/src/main/resources/META-INF/resources/editShopcatList.xhtml
new file mode 100644
index 0000000..1d42743
--- /dev/null
+++ b/src/main/resources/META-INF/resources/editShopcatList.xhtml
@@ -0,0 +1,68 @@
+<!DOCTYPE html>
+<html xmlns="http://www.w3.org/1999/xhtml"
+    xmlns:h="http://xmlns.jcp.org/jsf/html"
+    xmlns:f="http://xmlns.jcp.org/jsf/core"
+    xmlns:ui="http://java.sun.com/jsf/facelets"
+    xmlns:p="http://primefaces.org/ui"
+>
+<h:head>
+    <title>Shopping Category</title>
+    <style type="text/css">
+html {
+	font-size: 14px;
+}
+</style>
+</h:head>
+<h:body>
+    <ui:component>
+        <h:form id="frmShopcat">
+            <p:panelGrid columns="1">
+                <p:dataTable id="tblShopcats"
+                    style="width: 600px"
+                    value="#{shoppingListBean.shopcatList}"
+                    sortBy="#{item.shopCat}" var="item"
+                >
+                    <p:headerRow>
+                        <p:column colspan="4">
+                            <h:outputText value="#{item.shopCat}" />
+                        </p:column>
+                    </p:headerRow>
+                    </p:dataTable>
+                    <div>Ingredient key:
+                        #{editShopcatBean.ingkey}</div>
+                    <p:outputLabel for="@next"
+                        value="Category Name"
+                    />
+                    <p:inputText id="ctlShopcat"
+                        value="#{editShopcatBean.shopcatName}"
+                    >
+                    </p:inputText>
+                    <h:outputText value="suggestion:" />
+                    <p:selectOneMenu id="ctlShopcatMenu"
+                        value="#{editShopcatBean.shopcatSuggestion}"
+                    >
+                        <f:selectItems
+                            value="#{editShopcatBean.shopcatSuggestionList}"
+                        />
+                        <p:ajax event="change"
+                            listener="#{editShopcatBean.ajaxShopcatSuggest}"
+                            update="ctlShopcat"
+                        />
+                    </p:selectOneMenu>
+                    <p:panelGrid columns="2" style="width: 100%">
+                        <p:commandButton id="scDlgOK" value="OK"
+                            style="width: 6em"
+                            action="#{recipeDetailBean.doUpdateShopcat}"
+                            update="form1:tabGroupClient:ingredientTable"
+                            oncomplete="PF('editShopcatDlg').hide()"
+                        />
+                        <p:commandButton id="scDlgCan"
+                            value="Cancel" style="width: 6em"
+                            onclick="PF('editShopcatDlg').hide()"
+                        />
+                    </p:panelGrid>
+            </p:panelGrid>
+        </h:form>
+    </ui:component>
+</h:body>
+</html>
\ No newline at end of file
diff --git a/src/main/resources/META-INF/resources/main.xhtml b/src/main/resources/META-INF/resources/main.xhtml
index e3263c1..3106eb5 100644
--- a/src/main/resources/META-INF/resources/main.xhtml
+++ b/src/main/resources/META-INF/resources/main.xhtml
@@ -33,7 +33,9 @@
                     <f:selectItems
                         value="#{userSession.searchTypeList}"
                     />
-                    <p:ajax listener="#{adminMainBean.resetSuggestions}"/>
+                    <p:ajax
+                        listener="#{adminMainBean.resetSuggestions}"
+                    />
                 </p:selectOneMenu>
                 <p:commandButton id="ctlClear" value="Clear"
                     icon="ui-icon-close"
@@ -43,6 +45,16 @@
                 <p:commandButton value="New Recipe"
                     action="#{adminMainBean.doNewRecipe}"
                 />
+                <p:commandButton value="More..."
+                    action="#{adminMainBean.doMore}"
+                />
+                <h:outputText id="slistSSize"
+                    style="margin-left: 2em"
+                    value="#{userSession.shoppingList.size()}"
+                />
+                <h:outputLabel for="slistSize"
+                    value=" Recipes in Shopping List"
+                />
             </div>
         </h:form>
         <h:form id="form2">
diff --git a/src/main/resources/META-INF/resources/recipeDetails.xhtml b/src/main/resources/META-INF/resources/recipeDetails.xhtml
index d3a8077..aaa6a54 100644
--- a/src/main/resources/META-INF/resources/recipeDetails.xhtml
+++ b/src/main/resources/META-INF/resources/recipeDetails.xhtml
@@ -57,7 +57,16 @@
                                         styleClass="ui-button-print"
                                         immediate="true"
                                     />
-                                    <p:outputLabel for="@next"
+                                   <p:commandButton id="ctlShop"
+                                        icon="ui-icon-cart"
+                                        value="Shop"
+                                        immediate="true"
+                                        styleClass="#{recipeDetailBean.shop ? 'greenButton' : null}"
+                                        action="#{recipeDetailBean.doShop}"
+                                        update="ctlShop"
+                                    />
+                                    <h:outputText value=""/>
+                                     <p:outputLabel for="@next"
                                         value="Categories:"
                                     />
                                     <h:outputText
@@ -197,8 +206,7 @@
             <p:confirmDialog closable="false" id="okDeleteDlg"
                 header="Confirm Deletion"
                 message="OK to delete this recipe?"
-                severity="alert"
-                widgetVar="okDeleteDlg"
+                severity="alert" widgetVar="okDeleteDlg"
                 style="z-index: 25000"
             >
                 <p:commandButton id="dlgOK" value="OK"
diff --git a/src/main/resources/META-INF/resources/shoppingList.xhtml b/src/main/resources/META-INF/resources/shoppingList.xhtml
new file mode 100644
index 0000000..81b4132
--- /dev/null
+++ b/src/main/resources/META-INF/resources/shoppingList.xhtml
@@ -0,0 +1,141 @@
+<?xml version="1.0"?>
+<ui:composition template="/WEB-INF/layout/layout.xhtml"
+    xmlns:h="http://xmlns.jcp.org/jsf/html"
+    xmlns:f="http://xmlns.jcp.org/jsf/core"
+    xmlns:ui="http://java.sun.com/jsf/facelets"
+    xmlns:p="http://primefaces.org/ui"
+    xmlns:c="http://xmlns.jcp.org/jstl"
+>
+    <ui:define name="title">Gourmet Recipe Manager - Shopping</ui:define>
+    <ui:define name="content">
+        <style>
+.recipeTitle {
+	font-size: larger;
+	font-weight: bold;
+}
+
+.subtitle {
+	font-size: large;
+	font-weight: bold;
+}
+
+.ui-panelgrid-cell {
+	border-width: 0;
+	border-style: none;
+}
+
+.noRecipe {
+	text-decoration: line-through;
+	color: gray;
+}
+
+.plusRecipe {
+	
+}
+</style>
+        <h:messages />
+        <p:tabView id="tabGroupClient" orientation="left"
+            dynamic="true"
+        >
+            <p:tab id="overviewTab" title="Shopping List">
+                <h:form id="form1">
+                    <p:dataTable id="tblRecipes"
+                        style="width: 600px"
+                        value="#{shoppingListBean.recipeList}"
+                        var="item"
+                    >
+                        <f:facet name="header">
+                            <h:outputText value="Recipes" />
+                        </f:facet>
+                        <p:column style="width: 4em">
+                            <p:spinner required="true" min="0"
+                                value="#{item.count}" size="1"
+                            >
+                                <p:ajax
+                                    listener="#{shoppingListBean.pfAmountChange}"
+                                    update="@form:tblShopIngredients rname"
+                                />
+                            </p:spinner>
+                        </p:column>
+                        <p:column>
+                            <h:outputText id="rname"
+                                styleClass="#{(item.count eq 0) ? 'noRecipe' :'plusRecipe' }"
+                                value="#{item.recipe.title}"
+                            />
+                        </p:column>
+                    </p:dataTable>
+                    <!-- ====== Ingredients To Buy ======================= -->
+                    <p:column id="dlIng">
+                        <p:commandButton value="Download List" ajax="false">
+                            <p:fileDownload
+                                value="#{shoppingListBean.dlIngredientList}" 
+                            />
+                        </p:commandButton>
+                    </p:column>
+                    <p:column id="ingredientsc"
+                        style="width: 25%; vertical-align: top;"
+                    >
+                        <p:dataTable id="tblShopIngredients"
+                            style="width: 600px; margin-top: 10px"
+                            value="#{shoppingListBean.ingredientList}"
+                            sortBy="#{item.shopCat}" var="item"
+                        >
+                            <f:facet name="header">
+                                <h:outputText
+                                    styleClass="subtitle"
+                                    value="Ingredients"
+                                />
+                            </f:facet>
+                            <p:headerRow>
+                                <p:column colspan="4">
+                                    <h:outputText
+                                        value="#{item.shopCat}"
+                                    />
+                                </p:column>
+                            </p:headerRow>
+                            <p:column label="Amt"
+                                style="width: 3em; text-align: right"
+                            >
+                                <h:outputText
+                                    value="#{item.displayAmount}"
+                                />
+                            </p:column>
+                            <p:column label="Units"
+                                style="width: 5em"
+                            >
+                                <h:outputText
+                                    value="#{item.unit}"
+                                />
+                            </p:column>
+                            <p:column label="Item"
+                                style="width: 20em"
+                            >
+                                <h:outputText
+                                    value="#{item.item}"
+                                />
+                            </p:column>
+                        </p:dataTable>
+                    </p:column>
+                </h:form>
+            </p:tab>
+            <!--  -->
+            <p:tab id="ingshopcatEditTab"
+                title="Edit Shopping Categories"
+            >
+                <ui:include
+                    src="/WEB-INF/layout/misctabs/ingshopkey.xhtml"
+                />
+            </p:tab>
+            <!--  -->
+            <p:tab id="tabImportExport" title="Import/Export">
+                <h:outputText value="For future implementation" />
+            </p:tab>
+        </p:tabView>
+        <h:form id="frmHome">
+            <p:commandButton id="doHome" value="Home"
+                icon="ui-icon-home" ajax="false" immediate="true"
+                action="main.jsf"
+            />
+        </h:form>
+    </ui:define>
+</ui:composition>
\ No newline at end of file
diff --git a/src/test/java/com/mousetech/gourmetj/ShoppingListBeanTest.java b/src/test/java/com/mousetech/gourmetj/ShoppingListBeanTest.java
new file mode 100644
index 0000000..a5eb3a7
--- /dev/null
+++ b/src/test/java/com/mousetech/gourmetj/ShoppingListBeanTest.java
@@ -0,0 +1,52 @@
+/**
+ * Copyright (C) 2022, Tim Holloway
+ *
+ * Date written: Jan 12, 2022
+ * Author: Tim Holloway <timh@mousetech.com>
+ */
+package com.mousetech.gourmetj;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.junit.jupiter.api.BeforeAll;
+import org.junit.jupiter.api.Test;
+
+import com.mousetech.gourmetj.ShopIngredient;
+import com.mousetech.gourmetj.persistence.model.Shopcat;
+
+/**
+ * @author timh
+ * @since Jan 12, 2022
+ */
+class ShoppingListBeanTest {
+
+	static List<ShopIngredient> testList;
+
+	/**
+	 * @throws java.lang.Exception
+	 */
+	@BeforeAll
+	static void setUpBeforeClass() throws Exception {
+		testList = new ArrayList<ShopIngredient>();
+		testList.add(new ShopIngredient(2.0d, "cup",
+				"sugar", "sugar", "baking"));
+		testList.add(new ShopIngredient(1.5, "tsp",
+			"salt", "salt", "condiments"));
+		testList.add(new ShopIngredient(0.5, "tsp",
+			"pepper", "pepper", "condiments"));
+		testList.add(new ShopIngredient(2.0d, "cup",
+			"milk", "milk", "dairy"));
+		testList.add(new ShopIngredient(0.75d, "cup",
+			"sugar", "sugar", "baking"));
+	}
+
+	@Test
+	void test() {
+		ShoppingListBean.optimizeIngredients(testList);
+		assertEquals(4, testList.size());
+	}
+
+}