water -- to cover

Water is the chemical compound H₂O, consisting of hydrogen and oxygen atoms in a 2:1 ratio. It exists in liquid form under standard temperature and pressure conditions and is the universal solvent in culinary applications. In cooking, water serves as the fundamental medium for dissolving, suspending, and transferring heat to ingredients. The phrase "water to cover" is a traditional culinary instruction indicating that liquid should be added in sufficient quantity to submerge or partially submerge ingredients during cooking. The depth and temperature of water dramatically affect cooking outcomes, influencing extraction rates, cooking times, and final texture and flavor development.

Water is indispensable across all cuisines and cooking methods. It serves as the base for stocks, broths, and soups; the cooking medium for boiling, poaching, and steaming; and a key ingredient in doughs, batters, and sauces. "To cover" denotes a standard volume instruction used in recipes for legumes, grains, vegetables, and meats—typically meaning enough liquid to submerge ingredients by 1–2 inches. Cold water is used for hydrating dried ingredients and starting certain preparations; hot water accelerates cooking and flavor extraction. Water temperature, mineral content, and pH influence extraction rates in tea and coffee infusions, the texture of pasta, and the development of stocks and sauces.