– 2 tbsp sour cream
Sour cream is a good source of fat-soluble vitamins (particularly vitamins A and D) and provides calcium for bone health. It is relatively high in saturated fat and calories (approximately 60 calories and 6 grams of fat per tablespoon), and contains probiotics from the live bacterial cultures used in fermentation.
About
Sour cream is a dairy product produced by fermenting regular cream with lactic acid bacteria cultures, primarily Lactococcus lactis. This fermentation process lowers the pH of the cream, causing it to thicken and develop a characteristically tangy, acidic flavor. The result is a smooth, spoonable product with a fat content typically ranging from 18-20%, though commercial varieties may vary. Sour cream originated in Eastern Europe and Russia, where cooler climates naturally encouraged the spontaneous souring of dairy products, and has since become a staple ingredient in many culinary traditions worldwide.
The ingredient's distinctive sour taste derives from lactic acid production during fermentation, while its rich, creamy texture comes from the high fat content. True sour cream differs from crème fraîche (which contains slightly higher fat and a milder flavor) and Greek yogurt (which is strained to remove whey, resulting in a thicker consistency).
Culinary Uses
Sour cream is used as both a cooking ingredient and a condiment across numerous cuisines. It features prominently in Eastern European dishes such as borscht, stroganoff, and pierogi, where it adds richness and tang. In North American cooking, it appears in baked goods (including cakes, cookies, and quick breads), as a topping for baked potatoes and soups, and in sauces and dressings. Sour cream serves multiple culinary functions: it tenderizes baked goods through its acidity, enriches sauces and soups, acts as a cooling condiment for spicy dishes, and provides a creamy base for dips. It pairs well with herbs, spices, and acidic ingredients, and works in both sweet and savory applications.