Pour the tablespoon of vinegar into a 1 cup measurer.
Fill the rest of the 1 cup measurer with milk.
Gently stir and let the mixture sit for about 5 minutes. This will allow the milk to slightly curdle, giving it a buttermilk-like texture and taste.
Other options
Dairy-Free and Vegan: Instead of dairy milk, use coconut milk or soy milk! Just add 1 Tbsp vinegar or lemon juice to a 1 cup measuring cup, then fill the rest of the way with coconut or soy milk. Stir and let sit for 5 minutes then use in recipe!
