To make buttermilk from regular milk at home, follow this simple method:

1. Measure 1 cup of whole milk (you can use other milk types, but whole milk is preferred for better texture).
2. Add 1 tablespoon of white vinegar or lemon juice to the milk.
3. Stir the mixture well.
4. Let it sit at room temperature for 5 to 10 minutes. During this time, the milk will curdle slightly and thicken, resembling buttermilk.

This homemade buttermilk substitute is ready to use in recipes that call for buttermilk

. If you want to make different quantities, maintain the ratio of 1 tablespoon of acid (vinegar or lemon juice) per 1 cup of milk. For smaller amounts, adjust accordingly (e.g., 1/2 cup milk with 1 1/2 teaspoons vinegar)

. This method works because the acid causes the milk to curdle, creating the tangy flavor and texture characteristic of buttermilk. It is a quick and effective substitute when buttermilk is not available