← Use it up

What to do with leftover buttermilk

Storage times from USDA FoodKeeper data.

Short answer: Buttermilk keeps 1–2 weeks in the fridge from purchase and about 3 months in the freezer (USDA FoodKeeper). Frozen buttermilk separates a little, so use it for baking rather than drinking.

8 ways to use it up

  1. Pancakes or waffles. Swap buttermilk for milk for a lighter, tangier batter.
  2. Biscuits. Buttermilk biscuits are the classic use.
  3. Chicken marinade. Soak chicken in buttermilk with salt and spices before cooking.
  4. Ranch dressing. Whisk with mayo, garlic, dill and chives.
  5. Mashed potatoes. Stir in a splash for extra tang.
  6. Quick bread or muffins. Use it in banana bread, cornbread or muffins.
  7. Smoothies. Blend with fruit and a little honey.
  8. Freeze in measured portions. Freeze half-cup portions for future baking.

How long it keeps

FoodFridge (40°F / 4°C)Freezer (0°F)
Buttermilk1–2 weeks3 months

Common questions

How long does buttermilk last?

1–2 weeks in the fridge (USDA FoodKeeper).

Can you freeze buttermilk?

Yes, for about 3 months. Shake it after thawing; it's best for baking.

Related

Storage times: USDA FoodKeeper data. Recipe ideas are general suggestions. General information, not medical advice.