Sour cream is a tangy and creamy dairy product made by fermenting regular cream with lactic acid bacteria. It has a smooth texture and a slightly sour taste. It is commonly used as a condiment or ingredient in various dishes and recipes. Sour cream adds richness and a pleasant tanginess to dishes like tacos, baked potatoes, and dips. It can also be used as a topping for soups or desserts. Its versatility and creamy flavor make it a popular choice in both savory and sweet culinary creations.