You won't necessarily earn health benefits by following an alkaline diet, but for those with dodgy stomachs, lowering your acid intake can help with digestion. What Acids & Bases Can I Find in the Kitchen? Most fruits and vegetables fall in the alkaline category, but release acid when heat gets applied in cooking. Baking soda or sodium bicarbonate is a weak base with the molecular formula NaHCO3; when it... Citric Acid. Other acid foods include meats, poultry, eggs, dairy, grains, nuts and alcohol. Vinegar is a solution of acetic acid, a weak acid with the molecular formula CH3COOH. Here are some common cooking acids: Fruit Juices like lemon, lime, grapefruit, pineapple, apple Vinegars Wine and alcohol Tomatoes and their juice Buttermilk (the lactic acid help tenderize) Vinegar. Sodium Bicarbonate. There are nine essential amino acids, which you must get through your diet: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan and valine.