I've been able to get the food items for one category (Beans & Legumes), sorted by subcategory. An extract is also given below. This output was generated using pure PHP code (no modules for you to install). Also, my code will be well-commented, so that you can understand how it works and make any modifications yourself, if needed
***Baked Beans***
Baked Beans, Vegetarian Baked Beans, Baked Beans with Pork (Canned), Boston Baked Beans, Low Sodium Baked Beans
***Beans***
Green Snap Beans, Baked Beans, Black Beans (Canned), Refried Beans (Canned), Red Kidney Beans (Canned)
***Black Beans***
Black Beans (Canned), Black Beans, Black Beans (Mature Seeds, with Salt, Cooked, Boiled), Black Beans Canned, Low Fat Refried Black Beans
***Chickpeas***
Chickpeas (Garbanzo Beans, Bengal Gram) (Mature Seeds, Canned), Cooked Dry Chickpeas, Falafel Chickpea Balls, Garbanzo Beans, Chickpeas (Garbanzo Beans, Bengal Gram) (Mature Seeds, Without Salt, Cooked, Boiled)
***Green Beans***
Green Snap Beans, Green Snap Beans (Frozen), Green String Beans, Green Snap Beans (Drained Solids, Canned), Green Snap Beans (Solids and Liquids, Canned)
***Kidney Beans***
Kidney Beans (Canned), Red Kidney Beans (Canned), Kidney Beans (Without Salt, Cooked, Boiled), Red Kidney Beans (with Salt, Cooked, Boiled), California Red Kidney Beans (with Salt, Cooked, Boiled)
***Lentils***
Cooked Lentils, Lentils, Lentils (Sprouted), Pink Lentils, Organic Red Lentils