Sour cream is a type of fermented cream used as a savoury topping in a variety of dishes or as a baking ingredient. Sour cream is a tart-tasting dairy product that has a wide range of uses. Discover the tricks to cooking with it and how long to keep it in the fridge. Hi Bold Bakers! Sour Cream makes your baking better so this week I’m showing you how to create Homemade Sour Cream. Use it to create lighter, fluffier cakes and more. So let’s get baking! Sour cream is a dairy product made by fermenting cream with lactic acid bacteria. Learn about its history, types, ingredients, processing, and applications in various dishes and cuisines.