milk plus 1/2 teaspoon lemon juice
Soured milk retains the nutritional profile of whole milk, including calcium and protein, while the added acid aids in mineral absorption. The acidity also promotes digestive health by introducing lactic-like compounds, though this product lacks the probiotics of true fermented dairy.
About
Soured milk, or milk curdled with acid, is a dairy product created by the addition of an acidic agent—typically lemon juice, vinegar, or other acids—to fresh milk. The acid denatures the milk proteins (primarily casein), causing them to coagulate and separate into curds and whey. This simple transformation occurs almost instantaneously and requires no fermentation or specialized cultures. The resulting product has a tangy flavor profile and thicker consistency than whole milk, with a slight graininess from the curd particles. Soured milk serves as a functional substitute for buttermilk or sour cream in baking and cooking applications, though it differs chemically from traditionally fermented dairy products.
Culinary Uses
Soured milk is primarily employed in baking, where its acidity activates baking soda to produce lift and tenderness in cakes, quick breads, biscuits, and pancakes. The acid also tenderizes gluten structure, resulting in softer crumbs. Beyond baking, soured milk can be used in marinades for meat (where the acid acts as a tenderizer), in salad dressings for tang, and as a substitute in recipes calling for buttermilk or sour cream. It is particularly valuable in home kitchens where cultured buttermilk is unavailable, making it a practical pantry solution.