say it with pie

What if you needed buttermilk for a recipe, but it was snowing heavily and you have an ear infection and consider that an acceptable reason not to go outside in the bitter winter cold? This may have happened to me today.

Fret not! You can fake buttermilk by adding 1tbs of lemon juice to 1 cup whole milk!

But wait: what if you don’t have whole milk, but you do have 2% milk and a carton of heavy cream left over from a failed crème brûlée experiment? You can fake whole milk by adding 1-2tbs of heavy cream to 1 cup 2% milk!

Thank you, Chowhound.

See? You can get away with anything with cooking. Baking, not so much.