diff --git a/app/controllers/calculator_controller.rb b/app/controllers/calculator_controller.rb
index 9c2cad8..e0fe0b4 100644
--- a/app/controllers/calculator_controller.rb
+++ b/app/controllers/calculator_controller.rb
@@ -29,7 +29,7 @@ class CalculatorController < ApplicationController
   end
 
   def ingredient_search
-    @ingredients = Ingredient.has_density.search(params[:query]).order(:name)
+    @foods = Food.has_density.search(params[:query]).order(:name)
   end
 
 end
\ No newline at end of file
diff --git a/app/controllers/foods_controller.rb b/app/controllers/foods_controller.rb
new file mode 100644
index 0000000..0cbce39
--- /dev/null
+++ b/app/controllers/foods_controller.rb
@@ -0,0 +1,141 @@
+class FoodsController < ApplicationController
+
+  before_action :set_food, only: [:show, :edit, :update, :destroy]
+
+  before_action :ensure_valid_user, except: [:index, :show]
+
+  # GET /foods
+  # GET /foods.json
+  def index
+    @foods = Food.all.order(:name).page(params[:page]).per(params[:per])
+    if params[:name].present?
+      @foods = @foods.matches_tokens(:name, params[:name].split.take(4))
+    end
+  end
+
+  def show
+
+  end
+
+  # GET /foods/new
+  def new
+    @food = Food.new
+  end
+
+  # GET /foods/1/edit
+  def edit
+    ensure_owner @food
+  end
+
+  # POST /foods
+  # POST /foods.json
+  def create
+    @food = Food.new(food_params)
+    @food.user = current_user
+    if @food.ndbn.present?
+      @food.set_usda_food(UsdaFood.find_by_ndbn(@food.ndbn))
+    end
+
+    respond_to do |format|
+      if @food.save
+        format.html { redirect_to foods_path, notice: 'Ingredient was successfully created.' }
+        format.json { render json: { success: true }, status: :created, location: @food }
+      else
+        format.html { render :new }
+        format.json { render json: @food.errors, status: :unprocessable_entity }
+      end
+    end
+  end
+
+  # PATCH/PUT /foods/1
+  def update
+    ensure_owner @food do
+      @food.assign_attributes(food_params)
+      if @food.ndbn.present?
+        @food.set_usda_food(UsdaFood.find_by_ndbn(@food.ndbn))
+      end
+
+      respond_to do |format|
+        if @food.save
+          format.html { redirect_to foods_path, notice: 'Ingredient was successfully updated.' }
+          format.json { render json: { success: true }, status: :ok, location: @food }
+        else
+          format.html { render :edit }
+          format.json { render json: @food.errors, status: :unprocessable_entity }
+        end
+      end
+    end
+  end
+
+  # DELETE /foods/1
+  # DELETE /foods/1.json
+  def destroy
+    ensure_owner @food do
+      @food.destroy
+      respond_to do |format|
+        format.html { redirect_to foods_url, notice: 'Ingredient was successfully destroyed.' }
+        format.json { head :no_content }
+      end
+    end
+  end
+
+  def select_ndbn
+    if params[:id].present?
+      @food = Food.find(params[:id])
+    else
+      @food = Food.new
+    end
+
+    @food.assign_attributes(food_params)
+
+    if @food.ndbn.present?
+      @food.set_usda_food(UsdaFood.find_by_ndbn(@food.ndbn))
+    end
+
+    render :show
+  end
+
+  def prefetch
+    @foods = Food.all.order(:name)
+    render :search
+  end
+
+  def search
+    @foods = Food.search(params[:query]).order(:name)
+  end
+
+  def convert
+    @conversion = Conversion.new(conversion_params)
+
+    if @conversion.valid?
+      @output_quantity = @conversion.output_quantity
+      @conversion = Conversion.new
+    else
+      @output_quantity = ''
+    end
+  end
+
+  def usda_food_search
+    @foods = UsdaFood.search(params[:query]).limit(250).order(:long_description)
+
+    respond_to do |format|
+      format.html { render :layout => false }
+      format.json { }
+    end
+  end
+
+  private
+    # Use callbacks to share common setup or constraints between actions.
+    def set_food
+      @food = Food.find(params[:id])
+    end
+
+    # Never trust parameters from the scary internet, only allow the white list through.
+    def food_params
+      params.require(:food).permit(:name, :notes, :ndbn, :density, :water, :protein, :lipids, :carbohydrates, :kcal, :fiber, :sugar, :calcium, :sodium, :vit_k, :ash, :iron, :magnesium, :phosphorus, :potassium, :zinc, :copper, :manganese, :vit_c, :vit_b6, :vit_b12, :vit_a, :vit_e, :vit_d, :cholesterol, :ingredient_units_attributes => [:name, :gram_weight, :id, :_destroy])
+    end
+
+    def conversion_params
+      params.require(:conversion).permit(:input_quantity, :input_units, :scale, :output_units, :ingredient_id)
+    end
+end
diff --git a/app/controllers/ingredients_controller.rb b/app/controllers/ingredients_controller.rb
deleted file mode 100644
index e98aeaf..0000000
--- a/app/controllers/ingredients_controller.rb
+++ /dev/null
@@ -1,141 +0,0 @@
-class IngredientsController < ApplicationController
-
-  before_action :set_ingredient, only: [:show, :edit, :update, :destroy]
-
-  before_action :ensure_valid_user, except: [:index, :show]
-
-  # GET /ingredients
-  # GET /ingredients.json
-  def index
-    @ingredients = Ingredient.all.order(:name).page(params[:page]).per(params[:per])
-    if params[:name].present?
-      @ingredients = @ingredients.matches_tokens(:name, params[:name].split.take(4))
-    end
-  end
-
-  def show
-
-  end
-
-  # GET /ingredients/new
-  def new
-    @ingredient = Ingredient.new
-  end
-
-  # GET /ingredients/1/edit
-  def edit
-    ensure_owner @ingredient
-  end
-
-  # POST /ingredients
-  # POST /ingredients.json
-  def create
-    @ingredient = Ingredient.new(ingredient_params)
-    @ingredient.user = current_user
-    if @ingredient.ndbn.present?
-      @ingredient.set_usda_food(UsdaFood.find_by_ndbn(@ingredient.ndbn))
-    end
-
-    respond_to do |format|
-      if @ingredient.save
-        format.html { redirect_to ingredients_path, notice: 'Ingredient was successfully created.' }
-        format.json { render json: { success: true }, status: :created, location: @ingredient }
-      else
-        format.html { render :new }
-        format.json { render json: @ingredient.errors, status: :unprocessable_entity }
-      end
-    end
-  end
-
-  # PATCH/PUT /ingredients/1
-  def update
-    ensure_owner @ingredient do
-      @ingredient.assign_attributes(ingredient_params)
-      if @ingredient.ndbn.present?
-        @ingredient.set_usda_food(UsdaFood.find_by_ndbn(@ingredient.ndbn))
-      end
-
-      respond_to do |format|
-        if @ingredient.save
-          format.html { redirect_to ingredients_path, notice: 'Ingredient was successfully updated.' }
-          format.json { render json: { success: true }, status: :ok, location: @ingredient }
-        else
-          format.html { render :edit }
-          format.json { render json: @ingredient.errors, status: :unprocessable_entity }
-        end
-      end
-    end
-  end
-
-  # DELETE /ingredients/1
-  # DELETE /ingredients/1.json
-  def destroy
-    ensure_owner @ingredient do
-      @ingredient.destroy
-      respond_to do |format|
-        format.html { redirect_to ingredients_url, notice: 'Ingredient was successfully destroyed.' }
-        format.json { head :no_content }
-      end
-    end
-  end
-
-  def select_ndbn
-    if params[:id].present?
-      @ingredient = Ingredient.find(params[:id])
-    else
-      @ingredient = Ingredient.new
-    end
-
-    @ingredient.assign_attributes(ingredient_params)
-
-    if @ingredient.ndbn.present?
-      @ingredient.set_usda_food(UsdaFood.find_by_ndbn(@ingredient.ndbn))
-    end
-
-    render :show
-  end
-
-  def prefetch
-    @ingredients = Ingredient.all.order(:name)
-    render :search
-  end
-
-  def search
-    @ingredients = Ingredient.search(params[:query]).order(:name)
-  end
-
-  def convert
-    @conversion = Conversion.new(conversion_params)
-
-    if @conversion.valid?
-      @output_quantity = @conversion.output_quantity
-      @conversion = Conversion.new
-    else
-      @output_quantity = ''
-    end
-  end
-
-  def usda_food_search
-    @foods = UsdaFood.search(params[:query]).limit(250).order(:long_description)
-
-    respond_to do |format|
-      format.html { render :layout => false }
-      format.json { }
-    end
-  end
-
-  private
-    # Use callbacks to share common setup or constraints between actions.
-    def set_ingredient
-      @ingredient = Ingredient.find(params[:id])
-    end
-
-    # Never trust parameters from the scary internet, only allow the white list through.
-    def ingredient_params
-      params.require(:ingredient).permit(:name, :notes, :ndbn, :density, :water, :protein, :lipids, :carbohydrates, :kcal, :fiber, :sugar, :calcium, :sodium, :vit_k, :ash, :iron, :magnesium, :phosphorus, :potassium, :zinc, :copper, :manganese, :vit_c, :vit_b6, :vit_b12, :vit_a, :vit_e, :vit_d, :cholesterol, :ingredient_units_attributes => [:name, :gram_weight, :id, :_destroy])
-    end
-
-    def conversion_params
-      params.require(:conversion).permit(:input_quantity, :input_units, :scale, :output_units, :ingredient_id)
-    end
-end
diff --git a/app/helpers/foods_helper.rb b/app/helpers/foods_helper.rb
new file mode 100644
index 0000000..17e47d8
--- /dev/null
+++ b/app/helpers/foods_helper.rb
@@ -0,0 +1,4 @@
+module FoodsHelper
+
+
+end
diff --git a/app/helpers/ingredients_helper.rb b/app/helpers/ingredients_helper.rb
deleted file mode 100644
index 58448ab..0000000
--- a/app/helpers/ingredients_helper.rb
+++ /dev/null
@@ -1,4 +0,0 @@
-module IngredientsHelper
-
-
-end
diff --git a/app/models/concerns/ingredient.rb b/app/models/concerns/ingredient.rb
new file mode 100644
index 0000000..b226451
--- /dev/null
+++ b/app/models/concerns/ingredient.rb
@@ -0,0 +1,24 @@
+
+# Mixin for Ingredient-like things.
+# Consumer is expected to have the following methods:
+# #name => name of ingredient
+# #density => valid density string or nil
+# #custom_units => map of unit names to a weight (eg { 'clove' => '25 g', 'bulb' => '175 g' })
+# #nutrition_per_100g => Object that responds to all nutrition keys in NutritionData
+# nutrition_per_100g_errors => list of errors
+module Ingredient
+  extend ActiveSupport::Concern
+
+  included do
+  end
+
+  # Shared helper methods
+  def density?
+    !density.nil?
+  end
+
+
+
+  module ClassMethods
+  end
+end
\ No newline at end of file
diff --git a/app/models/conversion.rb b/app/models/conversion.rb
index 29c1cd1..2fa4482 100644
--- a/app/models/conversion.rb
+++ b/app/models/conversion.rb
@@ -21,7 +21,7 @@ class Conversion
 
   def check_conversion
     begin
-      ingredient = ingredient_id.blank? ? nil : Ingredient.find(ingredient_id)
+      ingredient = ingredient_id.blank? ? nil : Food.find(ingredient_id)
       scale = self.scale.blank? ? '1' : self.scale
       density = ingredient.nil? ? nil : ingredient.density
       @output_quantity = UnitConversion.convert(input_quantity, scale, input_units, output_units, density)
diff --git a/app/models/ingredient.rb b/app/models/food.rb
similarity index 72%
rename from app/models/ingredient.rb
rename to app/models/food.rb
index e22b520..b0dfb4f 100644
--- a/app/models/ingredient.rb
+++ b/app/models/food.rb
@@ -1,10 +1,11 @@
-class Ingredient < ApplicationRecord
+class Food < ApplicationRecord
+  include Ingredient
   include TokenizedLike
 
   belongs_to :user
-  has_many :ingredient_units, inverse_of: :ingredient, dependent: :destroy
+  has_many :food_units, inverse_of: :food, dependent: :destroy
 
-  accepts_nested_attributes_for :ingredient_units, allow_destroy: true
+  accepts_nested_attributes_for :food_units, allow_destroy: true
 
   validates :name, presence: true
   validates :density, density: true, allow_blank: true
@@ -15,20 +16,26 @@ class Ingredient < ApplicationRecord
     tokens = query.to_s.split(' ')
 
     if tokens.empty?
-      Ingredient.none
+      Food.none
     else
-      Ingredient.matches_tokens(:name, tokens)
+      Food.matches_tokens(:name, tokens)
     end
   end
 
-  def custom_unit_weight(unit)
-    ingredient_units.each do |iu|
-      if iu.matches?(unit)
-        return UnitConversion::parse(iu.gram_weight, 'grams')
-      end
+  def custom_units
+    units = {}
+    food_units.each do |fu|
+      units[fu.name] = UnitConversion::parse(fu.gram_weight, "grams")
     end
+    units
+  end
 
-    nil
+  def nutrition_per_100g
+    self
+  end
+
+  def nutrition_per_100g_errors
+    []
   end
 
   def ndbn=(value)
diff --git a/app/models/ingredient_unit.rb b/app/models/food_unit.rb
similarity index 76%
rename from app/models/ingredient_unit.rb
rename to app/models/food_unit.rb
index 6691667..b7a6a16 100644
--- a/app/models/ingredient_unit.rb
+++ b/app/models/food_unit.rb
@@ -1,5 +1,5 @@
-class IngredientUnit < ApplicationRecord
-  belongs_to :ingredient, inverse_of: :ingredient_units
+class FoodUnit < ApplicationRecord
+  belongs_to :food, inverse_of: :food_units
 
   validates :name, presence: true
   validates :gram_weight, presence: true
diff --git a/app/models/ingredient_proxy.rb b/app/models/ingredient_proxy.rb
index 94c9c60..f5a1dcd 100644
--- a/app/models/ingredient_proxy.rb
+++ b/app/models/ingredient_proxy.rb
@@ -2,24 +2,24 @@ class IngredientProxy
 
   attr_reader :ingredient
 
-  def initialize(ingredient)
-    @ingredient = ingredient
+  def initialize(food)
+    @food = food
   end
 
   def name
-    @ingredient.name
+    @food.name
   end
 
   def density
-    @ingredient.density
+    @food.density
   end
 
   def density?
-    @ingredient.density.present?
+    @food.density.present?
   end
 
   def get_custom_unit_equivalent(custom_unit_name)
-    @ingredient.custom_unit_weight(custom_unit_name)
+    @food.custom_unit_weight(custom_unit_name)
   end
 
 end
\ No newline at end of file
diff --git a/app/models/nutrition_data.rb b/app/models/nutrition_data.rb
index 3de8f5b..237fbc5 100644
--- a/app/models/nutrition_data.rb
+++ b/app/models/nutrition_data.rb
@@ -53,7 +53,7 @@ class NutritionData
       missing = []
 
       NUTRIENTS.each do |k, n|
-        value = i.ingredient.send(k)
+        value = i.food.send(k)
         if value.present?
           value = value.to_f
           running_total = self.instance_variable_get("@#{k}".to_sym)
@@ -70,11 +70,6 @@ class NutritionData
       end
     end
 
-    NUTRIENTS.each do |k, n|
-      v = self.instance_variable_get("@#{k}".to_sym)
-      self.instance_variable_set("@#{k}".to_sym, v.round(2))
-    end
-
   end
 
 end
\ No newline at end of file
diff --git a/app/models/recipe.rb b/app/models/recipe.rb
index 651aeaf..eea7eb6 100644
--- a/app/models/recipe.rb
+++ b/app/models/recipe.rb
@@ -1,4 +1,5 @@
 class Recipe < ApplicationRecord
+  include Ingredient
   include TokenizedLike
 
   has_many :recipe_ingredients, -> { order :sort_order }, inverse_of: :recipe, dependent: :destroy
@@ -71,7 +72,13 @@ class Recipe < ApplicationRecord
 
   def yields_list
     if self.yields.present?
-      self.yields.split(',').map { |y| y.strip }.select { |y| y.present? }
+      self.yields.split(',').map { |y| y.strip }.select { |y| y.present? }.map do |y|
+        begin
+          UnitConversion::parse(y)
+        rescue UntConversion::UnparseableUnitError
+          nil
+        end
+      end.compact
     else
       []
     end
@@ -123,6 +130,28 @@ class Recipe < ApplicationRecord
     copy
   end
 
+  def density
+    mas = yields_list.detect { |y| y.mass? }
+    vol = yields_list.detect { |y| y.volume? }
+    if mas && vol
+      "#{mas.value.value / vol.value.value} #{mas.unit.original_unit}/#{vol.unit.original_unit}"
+    else
+      nil
+    end
+  end
+
+  def custom_units
+    Hash[yields_list.select { |y| !y.mass? && !y.volume? && y.unit }.map { [y.unit.unit, y] }]
+  end
+
+  def nutrition_per_100g
+
+  end
+
+  def nutrition_per_100g_errors
+
+  end
+
   def self.for_criteria(criteria)
     query = active.order(criteria.sort_column => criteria.sort_direction)
 
diff --git a/app/models/recipe_ingredient.rb b/app/models/recipe_ingredient.rb
index d0d34ec..e991016 100644
--- a/app/models/recipe_ingredient.rb
+++ b/app/models/recipe_ingredient.rb
@@ -1,14 +1,14 @@
 class RecipeIngredient < ApplicationRecord
 
-  belongs_to :ingredient, optional: true
+  belongs_to :food, optional: true
   belongs_to :recipe_as_ingredient, class_name: 'Recipe', optional: true
   belongs_to :recipe, inverse_of: :recipe_ingredients, touch: true
 
   validates :sort_order, presence: true
 
   def name
-    if self.ingredient_detail.present?
-      self.ingredient_detail.name
+    if self.ingredient.present?
+      self.ingredient.name
     else
       super
     end
@@ -20,40 +20,42 @@ class RecipeIngredient < ApplicationRecord
     str
   end
 
-  def ingredient_detail_id
+  def ingredient_id
     case
       when recipe_as_ingredient_id
         "R#{recipe_as_ingredient_id}"
-      when ingredient_id
-        "I#{ingredient_id}"
+      when food_id
+        "F#{food_id}"
       else
         nil
     end
   end
 
-  def ingredient_detail_id=(val)
-    @recipe_detail = nil
+  def ingredient_id=(val)
+    return val if self.ingredient_id == val
+
+    @ingredient = nil
     case val
       when -> (v) { v.blank? }
         self.recipe_as_ingredient_id = nil
-        self.ingredient_id = nil
+        self.food_id = nil
       when /^R(\d+)$/
-        self.ingredient_id = nil
+        self.food_id = nil
         self.recipe_as_ingredient_id = $1.to_i
-      when /^I(\d+)$/
+      when /^F(\d+)$/
         self.recipe_as_ingredient_id = nil
-        self.ingredient_id = $1.to_i
+        self.food_id = $1.to_i
       else
-        raise "Invalid ingredient_detail_id: #{val}"
+        raise "Invalid ingredient_id: #{val}"
     end
   end
 
-  def ingredient_detail
-    @recipe_detail ||= case
+  def ingredient
+    @ingredient ||= case
                          when self.recipe_as_ingredient_id
-                           RecipeProxy.new(self.recipe_as_ingredient)
-                         when self.ingredient_id
-                           IngredientProxy.new(self.ingredient)
+                           self.recipe_as_ingredient
+                         when self.food_id
+                           self.food
                          else
                           nil
                        end
@@ -94,7 +96,7 @@ class RecipeIngredient < ApplicationRecord
 
   def to_volume
     return unless self.quantity.present?
-    if ingredient_detail && ingredient_detail.density?
+    if ingredient && ingredient.density?
       density = UnitConversion.parse(ingredient.density)
       if density.density?
         value_unit = UnitConversion.parse(self.quantity, self.units)
@@ -107,44 +109,56 @@ class RecipeIngredient < ApplicationRecord
   end
 
   def to_mass
-    if ingredient_detail
-      value_unit = as_value_unit
-      density = self.ingredient_detail.density? ? UnitConversion.parse(ingredient_detail.density) : nil
+    return unless self.quantity.present?
+    if ingredient && ingredient.density?
+      density = UnitConversion.parse(ingredient.density)
+      if density.density?
+        value_unit = UnitConversion.parse(self.quantity, self.units)
+        value_unit = value_unit.to_mass(density)
 
-      case
-        when value_unit.nil?
-        when value_unit.mass?
-          self.quantity = value_unit.pretty_value
-          self.units = value_unit.unit.to_s
-        when value_unit.volume? && density && density.density?
-          value_unit = value_unit.to_mass(density)
-          self.quantity = value_unit.pretty_value
-          self.units = value_unit.unit.to_s
+        self.quantity = value_unit.pretty_value
+        self.units = value_unit.unit.to_s
       end
     end
   end
 
-  def custom_unit?
-    self.ingredient_detail && self.ingredient_detail.get_custom_unit_equivalent(self.units).present?
+  def get_custom_unit_equivalent
+    if self.ingredient
+      unit = self.units.present? ? self.units.downcase : ''
+      pair = self.ingredient.custom_units.detect do |u, e|
+        if unit.empty?
+          ['each', 'ech', 'item', 'per'].include?(u.downcase)
+        else
+          [u.downcase, u.downcase.singularize, u.downcase.pluralize].any? { |uv| [unit, unit.singularize, unit.pluralize].include?(uv) }
+        end
+      end
+      pair ? pair[1] : nil
+    else
+      nil
+    end
   end
 
   def can_convert_to_grams?
     vu = as_value_unit
-    vu.present? && (vu.mass? || (vu.volume? && self.ingredient_detail && self.ingredient_detail.density.present?))
+    vu.present? && (vu.mass? || (vu.volume? && self.ingredient && self.ingredient.density?))
   end
 
   def to_grams
     value_unit = as_value_unit
-    gram_unit = value_unit.convert('g', self.ingredient_detail ? self.ingredient_detail.density : nil)
+    gram_unit = value_unit.convert('g', self.ingredient ? self.ingredient.density : nil)
     gram_unit.raw_value
   end
 
   def as_value_unit
+
+    custom_unit = self.get_custom_unit_equivalent
+
     case
       when self.quantity.blank?
         nil
-      when self.custom_unit?
-        self.ingredient_detail.get_custom_unit_equivalent(self.units).scale(self.quantity)
+      when custom_unit.present?
+        vu = UnitConversion.parse(custom_unit)
+        vu.scale(self.quantity)
       when self.units.present?
         UnitConversion.parse(self.quantity, self.units)
       else
@@ -154,7 +168,7 @@ class RecipeIngredient < ApplicationRecord
 
   def log_copy
     copy = RecipeIngredient.new
-    copy.ingredient = self.ingredient
+    copy.food = self.food
     copy.recipe_as_ingredient = self.recipe_as_ingredient
     copy.name = self.name
     copy.sort_order = self.sort_order
diff --git a/app/models/user.rb b/app/models/user.rb
index 4838cd2..ca60665 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1,7 +1,7 @@
 class User < ApplicationRecord
 
   has_many :recipes, dependent: :nullify
-  has_many :ingredients, dependent: :nullify
+  has_many :foods, dependent: :nullify
   has_many :task_lists, dependent: :destroy
 
   has_secure_password
diff --git a/app/views/calculator/ingredient_search.json.jbuilder b/app/views/calculator/ingredient_search.json.jbuilder
index d2b083f..f3f5124 100644
--- a/app/views/calculator/ingredient_search.json.jbuilder
+++ b/app/views/calculator/ingredient_search.json.jbuilder
@@ -1,5 +1,5 @@
 
-json.array! @ingredients do |i|
+json.array! @foods do |i|
 
   json.extract! i, :id, :name, :density
 
diff --git a/app/views/ingredients/convert.json.jbuilder b/app/views/foods/convert.json.jbuilder
similarity index 100%
rename from app/views/ingredients/convert.json.jbuilder
rename to app/views/foods/convert.json.jbuilder
diff --git a/app/views/ingredients/index.json.jbuilder b/app/views/foods/index.json.jbuilder
similarity index 60%
rename from app/views/ingredients/index.json.jbuilder
rename to app/views/foods/index.json.jbuilder
index 266b0b5..c5beccb 100644
--- a/app/views/ingredients/index.json.jbuilder
+++ b/app/views/foods/index.json.jbuilder
@@ -1,10 +1,10 @@
 
-json.cache_root! [Ingredient.all, @ingredients] do
+json.cache_root! [Food.all, @foods] do
 
-  json.extract! @ingredients, :total_count, :total_pages, :current_page
-  json.page_size @ingredients.limit_value
+  json.extract! @foods, :total_count, :total_pages, :current_page
+  json.page_size @foods.limit_value
 
-  json.ingredients @ingredients do |i|
+  json.foods @foods do |i|
     json.extract! i, :id, :name, :ndbn, :kcal
     json.usda i.ndbn.present?
 
diff --git a/app/views/ingredients/search.json.jbuilder b/app/views/foods/search.json.jbuilder
similarity index 62%
rename from app/views/ingredients/search.json.jbuilder
rename to app/views/foods/search.json.jbuilder
index 9a42810..5eb7fb8 100644
--- a/app/views/ingredients/search.json.jbuilder
+++ b/app/views/foods/search.json.jbuilder
@@ -1,5 +1,5 @@
 
-json.array! @ingredients do |i|
+json.array! @foods do |i|
 
   json.extract! i, :id, :name, :density, :notes
 
diff --git a/app/views/ingredients/show.json.jbuilder b/app/views/foods/show.json.jbuilder
similarity index 83%
rename from app/views/ingredients/show.json.jbuilder
rename to app/views/foods/show.json.jbuilder
index 6dcaf6f..6667552 100644
--- a/app/views/ingredients/show.json.jbuilder
+++ b/app/views/foods/show.json.jbuilder
@@ -1,5 +1,5 @@
 
-json.extract! @ingredient,
+json.extract! @food,
               :id,
               :name,
               :ndbn,
@@ -32,15 +32,15 @@ json.extract! @ingredient,
               :cholesterol,
               :lipids
 
-if @ingredient.ndbn.present?
-  json.ndbn_units @ingredient.usda_food.usda_food_weights do |fw|
+if @food.ndbn.present?
+  json.ndbn_units @food.usda_food.usda_food_weights do |fw|
     json.extract! fw, :amount, :description, :gram_weight
   end
 else
   json.ndbn_units []
 end
 
-json.ingredient_units @ingredient.ingredient_units do |iu|
+json.ingredient_units @food.ingredient_units do |iu|
   json.extract! iu, :id, :name, :gram_weight
   json._destroy false
 end
\ No newline at end of file
diff --git a/app/views/ingredients/usda_food_search.json.jbuilder b/app/views/foods/usda_food_search.json.jbuilder
similarity index 100%
rename from app/views/ingredients/usda_food_search.json.jbuilder
rename to app/views/foods/usda_food_search.json.jbuilder
diff --git a/app/views/recipes/_recipe.json.jbuilder b/app/views/recipes/_recipe.json.jbuilder
index 4a4351e..be04ac8 100644
--- a/app/views/recipes/_recipe.json.jbuilder
+++ b/app/views/recipes/_recipe.json.jbuilder
@@ -10,10 +10,10 @@ json.ingredients recipe.recipe_ingredients do |ri|
   json.extract! ri, :id, :ingredient_detail_id, :display_name, :name, :quantity, :units, :preparation, :sort_order
 
   json.ingredient_detail do
-    if ri.ingredient.nil? && ri.ingredient_as_recipe.nil?
+    if ri.food.nil? && ri.ingredient_as_recipe.nil?
       json.null!
-    elsif ri.ingredient
-      json.extract! ri.ingredient, :name, :density, :notes
+    elsif ri.food
+      json.extract! ri.food, :name, :density, :notes
     else
       json.extract! ri.recipe_as_ingredient, :name
     end
diff --git a/config/routes.rb b/config/routes.rb
index 773d14b..57e0365 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -10,7 +10,7 @@ Rails.application.routes.draw do
 
   resources :logs, except: [:new, :create]
 
-  resources :ingredients, except: [] do
+  resources :foods, except: [] do
     collection do
       get :usda_food_search
 
diff --git a/db/migrate/20180910235229_rename_ingredient.rb b/db/migrate/20180910235229_rename_ingredient.rb
new file mode 100644
index 0000000..3b3aaac
--- /dev/null
+++ b/db/migrate/20180910235229_rename_ingredient.rb
@@ -0,0 +1,9 @@
+class RenameIngredient < ActiveRecord::Migration[5.2]
+  def change
+    rename_table :ingredients, :foods
+    rename_table :ingredient_units, :food_units
+
+    rename_column :food_units, :ingredient_id, :food_id
+    rename_column :recipe_ingredients, :ingredient_id, :food_id
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 98cb2e9..d4a2d4f 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,16 +10,16 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2018_09_06_191333) do
+ActiveRecord::Schema.define(version: 2018_09_10_235229) do
 
-  create_table "ingredient_units", force: :cascade do |t|
-    t.integer "ingredient_id", null: false
+  create_table "food_units", force: :cascade do |t|
+    t.integer "food_id", null: false
     t.string "name", null: false
     t.decimal "gram_weight", precision: 10, scale: 2, null: false
-    t.index ["ingredient_id"], name: "index_ingredient_units_on_ingredient_id"
+    t.index ["food_id"], name: "index_food_units_on_food_id"
   end
 
-  create_table "ingredients", force: :cascade do |t|
+  create_table "foods", force: :cascade do |t|
     t.string "name"
     t.string "density"
     t.text "notes"
@@ -74,7 +74,7 @@ ActiveRecord::Schema.define(version: 2018_09_06_191333) do
   end
 
   create_table "recipe_ingredients", force: :cascade do |t|
-    t.integer "ingredient_id"
+    t.integer "food_id"
     t.integer "recipe_id"
     t.string "name"
     t.integer "sort_order"
diff --git a/db/seeds.rb b/db/seeds.rb
index cb0d9d1..ef03f4d 100644
--- a/db/seeds.rb
+++ b/db/seeds.rb
@@ -44,7 +44,7 @@ ingredients = {
 }
 
 ingredients.each do |k, v|
-  ingredients[k] = Ingredient.create!({user_id: dan.id}.merge(v))
+  ingredients[k] = Food.create!({user_id: dan.id}.merge(v))
 end
 
 g = Recipe.create!({
@@ -69,19 +69,19 @@ bb = Recipe.create!({
 bb.tag_names = ['beef', 'dinner', 'stirfry']
 
 [
-    {quantity: '1', units: 'pound', preparation: 'flank steak, skirt steak, hanger steak, or flap meat, cut into 1/4-inch thick strips', ingredient: ingredients[:flank]},
-    {quantity: '1/4', units: 'cup', preparation: 'divided', ingredient: ingredients[:soy_sauce]},
-    {quantity: '1/4', units: 'cup', preparation: 'divided', ingredient: ingredients[:shaoxing]},
-    {quantity: '2', units: 'teaspoons', preparation: '', ingredient: ingredients[:cornstarch]},
-    {quantity: '1/3', units: 'cup', preparation: '', ingredient: ingredients[:stock]},
-    {quantity: '1/4', units: 'cup', preparation: '', ingredient: ingredients[:oyster_sauce]},
-    {quantity: '1', units: 'tablespoon', preparation: '', ingredient: ingredients[:sugar]},
-    {quantity: '1', units: 'teaspoon', preparation: '', ingredient: ingredients[:seasame_oil]},
-    {quantity: '2', units: 'medium cloves', preparation: 'finely minced', ingredient: ingredients[:garlic]},
+    {quantity: '1', units: 'pound', preparation: 'flank steak, skirt steak, hanger steak, or flap meat, cut into 1/4-inch thick strips', food: ingredients[:flank]},
+    {quantity: '1/4', units: 'cup', preparation: 'divided', food: ingredients[:soy_sauce]},
+    {quantity: '1/4', units: 'cup', preparation: 'divided', food: ingredients[:shaoxing]},
+    {quantity: '2', units: 'teaspoons', preparation: '', food: ingredients[:cornstarch]},
+    {quantity: '1/3', units: 'cup', preparation: '', food: ingredients[:stock]},
+    {quantity: '1/4', units: 'cup', preparation: '', food: ingredients[:oyster_sauce]},
+    {quantity: '1', units: 'tablespoon', preparation: '', food: ingredients[:sugar]},
+    {quantity: '1', units: 'teaspoon', preparation: '', food: ingredients[:seasame_oil]},
+    {quantity: '2', units: 'medium cloves', preparation: 'finely minced', food: ingredients[:garlic]},
     {quantity: '2', units: 'teaspoons', preparation: 'finely minced', name: 'ginger root'},
     {quantity: '3', units: '', preparation: 'whites finely sliced, greens cut into 1/2-inch segments, reserved separately', name: 'Scallions'},
-    {quantity: '4', units: 'tablespoons', preparation: '', ingredient: ingredients[:peanut_oil]},
-    {quantity: '1', units: 'pound', preparation: '', ingredient: ingredients[:broccoli]},
+    {quantity: '4', units: 'tablespoons', preparation: '', food: ingredients[:peanut_oil]},
+    {quantity: '1', units: 'pound', preparation: '', food: ingredients[:broccoli]},
 ].each_with_index do |ri, i|
   RecipeIngredient.create!({recipe: bb, sort_order: i}.merge(ri))
 end
diff --git a/lib/usda_importer.rb b/lib/usda_importer.rb
index eb76e77..2a01cbb 100644
--- a/lib/usda_importer.rb
+++ b/lib/usda_importer.rb
@@ -207,7 +207,7 @@ class UsdaImporter
       sorted_files.each { |k, v| `rm #{v}` }
     end
 
-    Ingredient.where('ndbn != ?', '').where('ndbn IS NOT NULL').each do |i|
+    Food.where('ndbn != ?', '').where('ndbn IS NOT NULL').each do |i|
       i.set_usda_food(i.usda_food)
       i.save!
     end
diff --git a/spec/factories/ingredient_units.rb b/spec/factories/food_units.rb
similarity index 60%
rename from spec/factories/ingredient_units.rb
rename to spec/factories/food_units.rb
index c8ba875..aa703a7 100644
--- a/spec/factories/ingredient_units.rb
+++ b/spec/factories/food_units.rb
@@ -1,6 +1,6 @@
 FactoryBot.define do
-  factory :ingredient_unit do
-    ingredient
+  factory :food_unit do
+    food
     name 'Each'
     gram_weight 10.5
   end
diff --git a/spec/factories/ingredients.rb b/spec/factories/foods.rb
similarity index 55%
rename from spec/factories/ingredients.rb
rename to spec/factories/foods.rb
index 4b6dc2a..1928daf 100644
--- a/spec/factories/ingredients.rb
+++ b/spec/factories/foods.rb
@@ -1,12 +1,12 @@
 FactoryBot.define do
-  factory :ingredient do
-    name 'Ingredient'
+  factory :food do
+    name 'Food'
     density nil
     notes 'note note note'
     user
   end
 
-  factory :ingredient_with_density, parent: :ingredient do
+  factory :food_with_density, parent: :food do
     name 'Butter'
     density '8 oz/cup'
   end
diff --git a/spec/factories/recipe_ingredients.rb b/spec/factories/recipe_ingredients.rb
index c1fa213..e03e230 100644
--- a/spec/factories/recipe_ingredients.rb
+++ b/spec/factories/recipe_ingredients.rb
@@ -2,7 +2,7 @@ FactoryBot.define do
   factory :recipe_ingredient do
     sort_order 1
     recipe
-    ingredient
+    food
   end
 
 end
diff --git a/spec/models/ingredient_spec.rb b/spec/models/food_spec.rb
similarity index 57%
rename from spec/models/ingredient_spec.rb
rename to spec/models/food_spec.rb
index 682a401..90f938c 100644
--- a/spec/models/ingredient_spec.rb
+++ b/spec/models/food_spec.rb
@@ -1,11 +1,11 @@
 require 'rails_helper'
 
-RSpec.describe Ingredient, type: :model do
+RSpec.describe Food, type: :model do
 
   describe 'validation' do
 
     it 'validates density' do
-      i = build(:ingredient)
+      i = build(:food)
       expect(i).to be_valid
 
       i.density = '5'
@@ -25,7 +25,7 @@ RSpec.describe Ingredient, type: :model do
 
   describe 'set_usda_food' do
     it 'sets the density' do
-      i = build(:ingredient)
+      i = build(:food)
       f = create(:salted_butter)
       create(:usda_food_weight, usda_food: f)
 
@@ -35,15 +35,15 @@ RSpec.describe Ingredient, type: :model do
     end
   end
 
-  describe '#custom_unit_weight' do
-    it 'returns a ValueUnit for valid custom weights' do
-      i = build(:ingredient)
-      i.ingredient_units << IngredientUnit.new(name: 'clove', gram_weight: 20.0)
+  describe '#custom_units' do
+    it 'returns a hash based on food_units' do
+      i = build(:food)
+      i.food_units << FoodUnit.new(name: 'clove', gram_weight: 20.0)
 
-      vu = i.custom_unit_weight('clove')
-      expect(vu).not_to be_nil
-      expect(vu.raw_value).to eq 20.0
-      expect(vu.unit.to_s).to eq 'gram'
+      units = i.custom_units
+      expect(units['clove']).to be_a UnitConversion::ValueUnit
+      expect(units['clove'].value.value).to eq 20.0
+      expect(units['clove'].unit.unit).to eq 'g'
     end
   end
 
diff --git a/spec/models/ingredient_unit_spec.rb b/spec/models/food_unit_spec.rb
similarity index 55%
rename from spec/models/ingredient_unit_spec.rb
rename to spec/models/food_unit_spec.rb
index c2b189c..13e40e3 100644
--- a/spec/models/ingredient_unit_spec.rb
+++ b/spec/models/food_unit_spec.rb
@@ -1,6 +1,6 @@
 require 'rails_helper'
 
-RSpec.describe IngredientUnit, type: :model do
+RSpec.describe FoodUnit, type: :model do
 
   describe 'matches?' do
     it 'matches empty units to each-like terms' do
@@ -15,16 +15,16 @@ RSpec.describe IngredientUnit, type: :model do
       ]
 
       each_terms.each do |t|
-        expect(create(:ingredient_unit, name: t).matches?('')).to eq(true), "expected #{t} to match"
+        expect(create(:food_unit, name: t).matches?('')).to eq(true), "expected #{t} to match"
       end
     end
 
     it 'matches unit names' do
-      expect(create(:ingredient_unit, name: 'Clove').matches?('clove')).to eq true
+      expect(create(:food_unit, name: 'Clove').matches?('clove')).to eq true
     end
 
     it 'matches pluralized unit names' do
-      expect(create(:ingredient_unit, name: 'Clove').matches?('cloves')).to eq true
+      expect(create(:food_unit, name: 'Clove').matches?('cloves')).to eq true
     end
   end
 
diff --git a/spec/models/nutrition_data_spec.rb b/spec/models/nutrition_data_spec.rb
new file mode 100644
index 0000000..74f4b38
--- /dev/null
+++ b/spec/models/nutrition_data_spec.rb
@@ -0,0 +1,56 @@
+require 'rails_helper'
+
+RSpec.describe NutritionData, type: :model do
+
+  let(:rec1_ingredients) do
+    [
+      RecipeIngredient.new({
+        quantity: '100',
+        units: 'g',
+        sort_order: 1,
+        food: create(:food, kcal: 10, protein: 2)
+      }),
+      RecipeIngredient.new({
+        quantity: '100',
+        units: 'g',
+        sort_order: 2,
+        food: create(:food, kcal: 10, lipids: 2)
+      })
+    ]
+  end
+
+  let(:recipe1) do
+    create(:recipe, yields: '500 g').tap do |r|
+      r.recipe_ingredients = rec1_ingredients
+    end
+  end
+
+  let(:rec2_ingredients) do
+    [
+      RecipeIngredient.new({
+        quantity: '100',
+        units: 'g',
+        sort_order: 1,
+        recipe_as_ingredient: recipe1
+      }),
+      RecipeIngredient.new({
+        quantity: '100',
+        units: 'g',
+        sort_order: 2,
+        food: create(:food, kcal: 10, lipids: 2)
+      })
+    ]
+  end
+
+  let(:recipe2) do
+    create(:recipe, yields: '500 g').tap do |r|
+      r.recipe_ingredients = rec2_ingredients
+    end
+  end
+
+  it 'runs' do
+    n = recipe2.nutrition_data
+
+  end
+
+end
diff --git a/spec/models/recipe_ingredient_spec.rb b/spec/models/recipe_ingredient_spec.rb
index 9c2d599..d5f5e52 100644
--- a/spec/models/recipe_ingredient_spec.rb
+++ b/spec/models/recipe_ingredient_spec.rb
@@ -5,16 +5,16 @@ RSpec.describe RecipeIngredient, type: :model do
   describe 'to_mass' do
 
     it 'converts volume ingredients with density' do
-      ri = RecipeIngredient.new(quantity: 2, units: 'tbsp', ingredient: create(:ingredient_with_density))
+      ri = RecipeIngredient.new(quantity: 2, units: 'tbsp', food: create(:food_with_density))
       expect(ri.as_value_unit.mass?).to be_falsey
       ri.to_mass
       expect(ri.as_value_unit.mass?).to be_truthy
     end
 
     it 'converts ingredients with custom units' do
-      i = create(:ingredient_with_density)
-      i.ingredient_units << IngredientUnit.new(name: 'pat', gram_weight: 25)
-      ri = RecipeIngredient.new(quantity: 2, units: 'pat', ingredient: i)
+      i = create(:food_with_density)
+      i.food_units << FoodUnit.new(name: 'pat', gram_weight: 25)
+      ri = RecipeIngredient.new(quantity: 2, units: 'pat', food: i)
       ri.to_mass
       vu = ri.as_value_unit
       expect(vu.raw_value).to eq 50
@@ -58,19 +58,19 @@ RSpec.describe RecipeIngredient, type: :model do
 
     describe 'with ingredient' do
       it 'returns false if unit is volume and ingredient has no density' do
-        ri = RecipeIngredient.new(quantity: '5 1/2', units: 'cups', ingredient: create(:ingredient))
+        ri = RecipeIngredient.new(quantity: '5 1/2', units: 'cups', food: create(:food))
         expect(ri.can_convert_to_grams?).to be_falsey
       end
 
       it 'returns true if unit is volume and ingredient has density' do
-        ri = RecipeIngredient.new(quantity: '5 1/2', units: 'cups', ingredient: create(:ingredient_with_density))
+        ri = RecipeIngredient.new(quantity: '5 1/2', units: 'cups', food: create(:food_with_density))
         expect(ri.can_convert_to_grams?).to be_truthy
       end
     end
 
     describe 'with recipe_as_ingredient' do
       it 'return true if unit is volume and recipe has density' do
-        ri = RecipeIngredient.new(quantity: '5 1/2', units: 'cups', recipe_as_ingredient: create(:recipe))
+        ri = RecipeIngredient.new(quantity: '5 1/2', units: 'cups', recipe_as_ingredient: create(:recipe, yields: '4 cups, 13 oz'))
         expect(ri.can_convert_to_grams?).to be_truthy
       end
     end