Here is a easy way to make homemade buttermilk, no need to go to the store if you do not have any. I use buttermilk in almost all of my baking, also for marinating chicken, biscuits, pancakes, the secret to the make most of my cake and cupcakes and using buttermilk, it makes the most delicious and moist cake. This recipe calls for 1 cup but you can half, double or triple this recipe..
Ingredients: 1 cup milk 1 tablespoon lemon juice or white vinegar
Combine the milk and lemon juice. Measure 1 cup of milk. Stir in 1 tablespoon of lemon juice or white vinegar.
Let stand 5-10 minutes. Let the mixture stand at room temperature for 5-10 minutes. When it is ready, the milk will be slightly thickened and you will see very small curdled bits and that is fine. (This substitute will not become as thick as regular buttermilk.)
Use the buttermilk. Use this substitute (including curdled bits) as you would buttermilk in your recipe.