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Milk is an excellent source of calcium, protein, and vitamin D (when fortified), supporting bone health and muscle development. It also contains potassium and B vitamins, though lactose content makes it unsuitable for those with lactose intolerance.
About
Milk is a nutrient-dense liquid secretion produced by the mammary glands of mammals to nourish their young. In culinary contexts, cow's milk is the predominant form, though milk from goats, sheep, buffalo, and other mammals is also used globally. Milk consists of approximately 87% water, with the remainder comprising lactose (milk sugar), proteins (primarily casein and whey), fat (butterfat), minerals (calcium, phosphorus, potassium), and vitamins (A, D, B12, riboflavin).
The composition and flavor profile of milk vary by animal species, breed, diet, and lactation stage. Cow's milk ranges from whole milk (3.5–4% fat) to reduced-fat and skim varieties. Fresh milk has a mild, slightly sweet flavor; when heated, it develops subtle caramelized notes. Different production methods—raw, pasteurized, ultra-pasteurized, and homogenized—affect protein structure and shelf stability.
Culinary Uses
Milk serves as a foundational ingredient across global cuisines, functioning as a beverage, cooking medium, and base for dairy products. It is essential in baking (cakes, bread, pastries) where it provides structure and moisture; in sauces (béchamel, velouté, cream sauces) where it creates richness; and in custards, puddings, and ice cream. Milk curdles when combined with acid or rennet, producing curds and whey—the basis for cheese and yogurt production. In savory cooking, milk tempers spices in curries and reduces heat in chili; in coffee and tea service, it is used as a complement to hot beverages. Regional preparations such as café au lait, daal, and kheer demonstrate milk's versatility across cultures.