diff --git a/lib/usda_nutrient_database/food.rb b/lib/usda_nutrient_database/food.rb
index acf1447..08c03ae 100644
--- a/lib/usda_nutrient_database/food.rb
+++ b/lib/usda_nutrient_database/food.rb
@@ -26,5 +26,8 @@ class Food < ActiveRecord::Base
       joins(:nutrients)
         .where(nutrients: { nutrient_number: nutrient_number })
     }
+    scope :by_food_group_code, ->(food_group_code) {
+      where(food_group_code: food_group_code)
+    }
   end
 end