Once you learn how to make buttermilk from scratch, you'll be prepared for any recipe that calls for it.
It's so simple to do and works beautifully. Offering many baking substitutes and more.
1 cup of milk
1 TBS vinegar or lemon juice
Place 1 tablespoon of vinegar or lemon juice in a (one cup) measuring cup and then fill with milk. Stir and let it sit for 10 minutes and it’s ready to go.
There is nothing to it.