or ¼ cup of sour cream
Sour cream is rich in fat and calories but provides calcium and some B vitamins; it also contains beneficial probiotics from fermentation, though these levels vary by brand and pasteurization method.
About
Sour cream is a fermented dairy product produced by adding lactic acid bacteria cultures to regular cream, which acidifies and thickens the mixture through fermentation. Originating in Eastern Europe and Russia, where the natural souring of cream was common due to climate conditions, it has become a staple in North American and European cuisines. The fermentation process typically takes 12-24 hours and produces a tangy, slightly acidic product with a thick, pourable consistency. Commercial sour cream typically contains 18-20% milkfat and possesses a distinctively sharp, slightly sour flavor profile that balances richness with acidity.
Culinary Uses
Sour cream functions as both a finishing element and an ingredient throughout cooking. It is commonly dolloped onto baked potatoes, chili, soups, and Mexican dishes such as tacos and enchiladas, where it provides cooling richness and tang. In baking, it adds moisture, tang, and tenderness to cakes, cookies, and quick breads. It serves as a base for dressings, dips, and sauces in cuisines ranging from Russian (stroganoff) to Eastern European (pierogi toppings) to American comfort food. The acidity also contributes to marinades and can curdle when added to very hot liquids, requiring tempering or late-stage addition.