.8 litres of water

Water (H₂O) is a colorless, odorless, and tasteless liquid that forms the foundation of all aqueous culinary preparations. It exists as a natural element in the Earth's hydrological cycle and serves as the universal solvent in cooking. In culinary contexts, water is sourced from various origins—tap water, spring water, mineral water, and purified water—each with distinct mineral compositions and pH levels that influence food preparation and flavor development.

The quality and mineral content of water significantly affect cooking outcomes, particularly in applications requiring precision such as bread baking, pasta making, and beverage preparation. Hard water (high mineral content) and soft water (low mineral content) interact differently with ingredients, affecting gluten development, extraction rates in coffee and tea, and the texture of baked goods.

Water is employed as a fundamental medium across all culinary traditions for hydrating grains, legumes, and dried ingredients; creating stocks, broths, and soups; cooking pasta, rice, and vegetables; and dissolving salt, sugar, and other solids. It functions as a heat-transfer medium in boiling, steaming, and poaching preparations. In baking and pastry work, water controls dough hydration and gluten structure. Additionally, water serves as a solvent for extracting flavors in teas and infusions, and as a cooking liquid that modulates ingredient texture and flavor concentration.