Comprehensive list of alkaline foods Alkaline foods refer to foods that produce alkaline substances when digested, helping to maintain the body\’s acid-base balance. Below is a list of alkaline foods for your reference. 1. Fruits: lemons, citrus, strawberries, pineapples, watermelons, grapes, apples, pears, bananas, cherries, grapefruits, peaches, etc. 2. Vegetables: celery, carrots, lotus roots, lettuce, seaweed, kelp, corn, potatoes, grass Mushrooms, onions, mushrooms