Of all the buttermilk substitute options, this is our favorite way to make buttermilk! We've found it to be the easiest method, and we almost always have these on ingredients on hand.
Combine: Combine 1 cup milk and 1 Tbsp lemon juice or white vinegar. Stir gently to combine.
Let Sit: Allow the mixture to sit for about 5-10 minutes at room temperature. During this time, the acid from either vinegar or lemon juice will curdle the milk, creating a buttermilk-like consistency. After the resting period, give the mixture a gentle stir to ensure that the acid is evenly distributed.
Video
Notes
Store in the fridge for up to 5 days.For longer term storage, keep in the freezer for up to 3 months.