6 Useful Diet For Gastritis Treatment 1. BRAT DIET (banana, rice, applesauce, toast) 2. Gruel: 1/4 cup rice, 4 cups water. 3. Low fat yogurt 4. Vegetables. cooked very well. AVOID veg that produce gas; cabbage, cauliflower, potatoes 5. Fluids/water. AVOID caffeinated drinks 6. Fruits: apples, bananas, peaches, kiwis, pears, grapes and melons. AVOID oranges, berries, figs, mangos and dried fruit.