I’ll be honest, half the time I don’t have buttermilk in the fridge when I need it. And yet, it pops up everywhere: pancakes, muffins, fried chicken marinades, even certain frostings. The good news? You don’t need to run out to the store every time. There are simple swaps that get the job done, and some work better for baking while others shine in savory dishes. Keep reading for quick tips for on how to make buttermilk at home.
What Buttermilk Actually Does
Buttermilk isn’t just “sour milk.” It adds:
- Tangy flavor – that little zip in pancakes and quick breads.
- Tenderizing power – especially in fried chicken marinades.
- Lift and fluff – it reacts with baking soda for rise.
So if you skip it completely, your recipe may end up flat or missing that subtle tang.
Easy At-Home Substitutes
1. Vinegar or Lemon Juice + Milk
- How to make it: Add 1 tablespoon of white vinegar or lemon juice to 1 cup of milk. Let it sit 5–10 minutes until it thickens slightly.
- Best for: Pancakes, muffins, quick breads.
- Note: Vinegar can smell strong at first (you’re not imagining it), but once it bakes, you won’t notice.
2. Yogurt or Sour Cream + Water/Milk
- How to make it: Whisk ¾ cup plain yogurt (or sour cream) with ¼ cup water or milk until pourable.
- Best for: Baking recipes where you want tang and richness.
- Note: Sour cream gives a bit more fat, so your results will be extra tender.
3. Cream of Tartar + Milk
- How to make it: Stir 1 ¾ teaspoons cream of tartar into 1 cup of milk.
- Best for: When you’ve got cream of tartar hiding in the pantry and no lemon or vinegar.
4. Just Use Buttermilk Powder
- How to use it: Mix the powder with water according to the package.
- Best for: Bakers who love being prepared. It stores forever and saves you in a pinch.
Which Version to Use and When
Frostings or dressings: Real buttermilk (or powder) is worth it for the flavor.
Fried chicken marinades: Stick with vinegar + milk or the real thing. The acid helps tenderize the meat.
Pancakes and waffles: Vinegar + milk is the easiest, but yogurt works if you want a thicker batter.
Muffins, cakes, quick breads: Yogurt or sour cream give richness. Vinegar works fine if that’s what you’ve got.
Real Life Baking Note
I went with vinegar + milk the last time I was making cookies, and yes—it smelled like vinegar at first. But once it hit the mix, it worked exactly like buttermilk should.
Bottom line? Don’t overthink it. Use what you have. Your baked goods will still come out delicious.
? Mix it up in your kitchen and make it work for you.
