.5 cups water

Water (H₂O) is a colorless, odorless liquid compound composed of hydrogen and oxygen in a 2:1 ratio, essential to all known forms of life and the primary solvent in culinary preparations. In cooking, water serves as both a fundamental ingredient and a medium for extracting flavors, dissolving solids, and facilitating chemical reactions. Its properties—including boiling point, density, and pH—vary with mineral content and temperature, influencing the outcome of culinary techniques from stock-making to bread baking. Tap water, filtered water, and mineral water are the primary forms used in kitchens, with mineral content and chlorination levels affecting taste and cooking results.

Water is indispensable across all cuisines as a cooking medium for boiling, steaming, simmering, and poaching. It serves as the base for stocks, broths, soups, and sauces, and is essential in baking for hydrating flours and activating gluten. Water is also used to dissolve salts, sugars, and spices; to blanch vegetables; to rehydrate dried ingredients; and to adjust the consistency of batters, doughs, and sauces. Quality and mineral content matter: hard water affects cooking times and color retention, while filtered or distilled water may be preferred for certain applications such as clear broths or precise baking ratios.