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Easy Buttermilk Substitute (2 Ingredients)

Homemade buttermilk substitute made with milk and lemon juice in a clear glass measuring cup

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Out of buttermilk? This quick homemade buttermilk substitute uses just milk and an acid to create the same tangy flavor and tender texture needed for baking. Ready in 5 minutes and perfect for pancakes, biscuits, cakes, and more.

Ingredients

  • 1 cup milk (whole milk preferred for best richness)
  • 1 TBSP white vinegar or lemon juice

Instructions

  1. Pour the milk into a measuring cup.
  2. Stir in the vinegar or lemon juice.
  3. Let the mixture sit for 5–10 minutes until slightly thickened and lightly curdled.
  4. Stir once more before using in your recipe.

Notes

Whole milk produces the closest flavor and texture to real buttermilk, but 2% works well too.

Avoid skim milk — it lacks the fat needed for optimal baking results.

The mixture will look slightly separated. This is exactly what you want.

Use immediately or refrigerate for up to 24 hours.