BUTTERMILK VS SOUR MILK

Buttermilk and Sour milk are interchangeable.

The difference is you can buy buttermilk, or you can make Sour milk.

Do not ever use milk that is too old, it is much to sour and may contain unsafe bacteria.

Sour milk can be made by adding 1 tablespoon of cider vinegar to 1 cup of milk. Mix well and let sit at room temperature for 10-15 minutes for flavor to develop.