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Homemade Buttermilk

Course: Ingredient
Cuisine: American
Keyword: dairy, fermentation
Prep Time: 5 minutes
Culture Time: 1 day
Servings: 1 pint
Homemade buttermilk is a breeze to make and freezes well so you'll never run out again!
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  • 2 cups milk see notes
  • 2 tbsp cultured buttermilk


  • Add cultured buttermilk and the milk to the jar.
  • Stir together and cover with the lid.
  • Place in a warm, dark place (like a kitchen cupboard or on top of the fridge) for 12-24 hours.
  • Put the jar of freshly cultured buttermilk into the fridge.
  • Make a new batch weekly to keep the culture strong.


You can make buttermilk with either low-fat or whole milk. I prefer whole milk because it results in a thicker and more flavorful culture.