Have you ever had plans to make a cake, but then find out you need buttermilk? Buttermilk is pretty hard to find, but it is necessary in a lot of desserts to give it the right texture. You can’t just substitute it for regular milk, because buttermilk is acidic, so it needs to interact with the leavening agent. Today I am sharing a buttermilk substitute, which works just as well as regular buttermilk.
One cup of buttermilk = One scant cup of milk + 1 tablespoon of lemon juice (do not use lemonade or storebought lemon juice! Sqeeze directly from a lemon) or vinegar.
Its that easy! The only thing is to make this, you need a liquid measuring cup. What you do is you pour one tablespoon of lemon juice or vinegar into the measuring cup, then you fill it with milk until it reaches the one cup line. Gently stir, then let it sit for 6 minutes. If it curdles a bit, that is perfectly fine. It may also smell funny, do not worry.
And there you have it! Homemade buttermilk, and much cheaper!