butter milk
Buttermilk provides protein, calcium, and B vitamins, while being lower in fat than whole milk. It also contains beneficial lactic acid bacteria from fermentation, supporting digestive health.
About
Buttermilk is a tangy, slightly thick dairy product that results from the liquid byproduct of butter churning, though modern buttermilk is typically produced by bacterial fermentation of milk. Traditional buttermilk, left over from butter-making, is thin and acidic with a sour flavor. Contemporary cultured buttermilk is made by adding lactic acid-producing cultures to milk, yielding a thicker consistency and more pronounced tanginess. The fermentation process lowers the pH and creates characteristic sour notes while developing a creamy texture.
Buttermilk has a milky white appearance with slight thickness and a distinctly sour, slightly salty taste. It typically contains 0.5-1.0% fat in commercially available versions, though traditional buttermilk varies depending on the butter-making method used.
Culinary Uses
Buttermilk is a foundational ingredient in baking, where its acidity reacts with baking soda to create lift and tenderness in biscuits, pancakes, cakes, and quick breads. The acid also activates leavening agents and tenderizes gluten structure, resulting in lighter, more delicate crumbs. Beyond baking, buttermilk appears in salad dressings, marinades for fried chicken and other proteins, and as a base for cold soups. In Southern and traditional Anglo-American cuisines, it features prominently in biscuits and cornbread. The tangy flavor complements both sweet and savory applications.