- buttermilk
Cultured buttermilk is an excellent source of probiotics (beneficial live bacteria) and provides calcium, protein, and B vitamins, while being lower in fat than whole milk. It aids digestive health and contains lactobacillus cultures that support gut flora.
About
Buttermilk is a slightly acidic dairy byproduct traditionally produced as the liquid remaining after butter is churned from cream. In modern production, buttermilk is typically cultured milk made by adding lactic acid bacteria (Lactococcus lactis) to low-fat or skim milk, creating a tangy, probiotic-rich beverage. The culturing process ferments lactose into lactic acid, lowering the pH and creating a characteristic sour taste with a pourable, slightly thicker consistency than whole milk. Traditional buttermilk from butter-making contains less lactose and fat, while cultured buttermilk is more widely available commercially and contains beneficial live cultures.
Culinary Uses
Buttermilk is essential in baking, where its acidity reacts with baking soda to create lift and tender crumbs in pancakes, biscuits, cakes, and quick breads. Its tangy flavor enhances Southern cuisine classics such as fried chicken marinades, cornbread, and pound cakes. In dressings and sauces, buttermilk provides a creamy base with acidic brightness—particularly in ranch dressing and coleslaw dressings. It is also used in marinades for meat and seafood, where the lactic acid tenderizes proteins. Beyond baking, buttermilk serves as a substitute for sour cream or yogurt in many applications and can be consumed as a beverage, especially in South Asian and Scandinavian traditions.