Just some interesting information
This website
http://www.diet.com/g/hay-dietFood combining guidelines
Food groupsFoodsCombine withDo not combineExceptionsAcid fruitsGrapefruit, oranges, lemons, limes, pineapples, pomegranates, tomatoesSub-acid fruit and nuts and seedsSweet fruit and other food groupsTomatoes can be eaten with low and non-starchy vegetables and avocadoSub-acid fruitsApples, apricots, berries, grapes, kiwi, mango, nectarines, papaya, peaches, pears, plums, strawberriesAcid or sweet fruits, not both, and nuts and seedsOther food groups Sweet fruitsBananas, coconut, dates, dried fruits, prunes, raisinsSub-acid fruits, and nuts and seedsAcid fruit and other food groups MelonsCantaloupe, honeydew, watermelonEat aloneAll groups ProteinMeat, poultry, fish, eggs, dairy, dry beans/peas, nuts & seeds, peanuts, soy beans, soy products, tofuLow and non-starchy vegetablesOther proteins, fats, carbohydrates and starches, and fruitsDrink milk aloneLow and non-starchy vegetablesAsparagus, artichokes, green beans, beets, broccoli, cabbage, cauliflower, cucumber, eggplant, garlic, lettuce, celery, carrots, onions, parsley, peas, peppers, turnips, mushrooms, zucchiniProtein, fats, carbohydrates, and starchesFruits Carbohydrates and starchesBread, pasta, grains/cereals, potatoes, pumpkin, winter squashes, yamsLow and non-starchy vegetables and fatsFruits and protein FatsAvocado, olives, coconut, butter, cream, and olive, avocado, flax, sesame, and canola oilsLow and non-starchy vegetables, carbohydrates and starches, and proteinProtein, fruitsAvocado can be eaten with fruits