Homemade buttermilk is easy to make with milk and vinegar.
What Does Buttermilk Do in a Recipe?
Besides acting as a liquid ingredient, buttermilk adds flavor and acidity to a recipe.

Credit:Caitlin Bensel; Food Stylist: Torie Cox
In baked goods, the acid in buttermilk can react with baking soda to provide lift.
Is Homemade Buttermilk the Same as Store-bought?
No, homemade buttermilk won’t be exactly the same as store-bought.

Credit:Caitlin Bensel; Food Stylist: Torie Cox
The real thing is the best option, though, if you’re able to get it.
What Kind of Milk Is Best for Homemade Buttermilk?
Whole milk is the best milk to use in this recipe.

Credit:Caitlin Bensel; Food Stylist: Torie Cox
Using low-fat or skim milk can lead to too much separation when adding the vinegar or lemon juice.
Is Vinegar or Lemon Juice Better for Homemade Buttermilk?
you might use whichever you have on hand.

Credit:Caitlin Bensel; Food Stylist: Torie Cox
Can I Use Nondairy Milk To Make Buttermilk?
Be sure to use an unsweetened milk, such as soy, cashew, or almond.
What Other Substitutes Can I Use for Buttermilk?
Other cultured dairy products, like sour cream, yogurt, or kefir can make good substitutes for buttermilk.
Let stand:
Let stand 10 minutes before using.