How To Make Buttermilk

Milk Container_BW by Kool Cats Photography over 4 Million Views is licensed by CC BY 2.0 

Another really very simple trick to making an ingredient that is rather hard to find in the UK. Buttermilk is so very easy and quick to make yourself. Just measure one cup of milk and then add one tablespoon of lemon juice, and then leave for 10 minutes to curdle.