tb butter or margarine

Butter is an emulsified dairy fat produced by churning cream or milk until the fat globules coalesce into a solid mass, separating from the liquid buttermilk. It is composed primarily of milk fat (approximately 80-82% butterfat), water, and milk solids, with a melting point around 32-35°C (90-95°F). Butter has a rich, slightly sweet, and creamy flavor that develops through the fermentation of cream, particularly in cultured butter varieties. Margarine is a butter substitute made by emulsifying vegetable oils or other fat sources with water, milk, and various additives to achieve a similar texture and cooking performance to natural butter. While traditional margarines employed trans fats from hydrogenation, modern formulations typically use modified vegetable oils and are increasingly trans-fat free.

Butter and margarine function as foundational cooking fats in both sweet and savory preparations. Butter is essential for baking, where its specific fat composition affects the texture of pastries, cakes, and cookies; it is also used for sautéing, pan-frying, making sauces (particularly beurre blanc and hollandaise), and as a finishing enrichment. Margarine performs similarly in many applications, though it may produce slightly different results in precision baking due to differing water content and fat composition. Both are spread on bread, melted over vegetables, and incorporated into sauces and emulsions across virtually all Western cuisines and many global traditions.