butter

Butter is an emulsified dairy product made by churning cream or milk to separate butterfat from buttermilk. It consists of at least 80% milkfat by weight in most Western standards, with the remainder comprising water and milk solids. Butter originates from ancient practices of preserving milk fat and is produced globally from cow's milk, though water buffalo, goat, and sheep milk butters exist in various culinary traditions.

The color ranges from pale yellow to deep golden depending on the animal's diet (particularly carotenoid content from grass), season, and production methods. Butter exhibits a smooth, creamy texture when softened and becomes hard and dense when chilled. Its flavor profile ranges from sweet and delicate to nutty and tangy, influenced by the milk source, fermentation (cultured vs. sweet cream), aging, and salt content.

Butter functions as both a cooking medium and a flavoring ingredient across nearly all culinary traditions. It is essential for baking, providing structure and richness to pastries, cakes, and breads. In cooking, butter is used for sautéing, pan-frying, and finishing dishes, contributing distinctive flavor and emulsifying sauces. Clarified butter (ghee) serves extended cooking applications due to its higher smoke point. Butter is also used raw in compound butters, for spreading, and as an emulsifying agent in classic French mother sauces and contemporary cuisine.