How To Make a Substitute For Buttermilk | Simple Kitchen Fix

A homemade stand-in is 1 cup milk plus 1 tablespoon lemon juice or white vinegar, rested for 5 to 10 minutes.

Running out of buttermilk feels annoying right when the batter is mixed and the pan is ready. The good news is that you usually don’t need a store trip. In many baked goods, a homemade swap gives you the tang, moisture, and acidity the recipe wants, so your pancakes stay fluffy and your cake still bakes up tender.

The best substitute depends on what you’re making. A quick milk-and-acid mix works for most cakes, muffins, pancakes, and loaf breads. Yogurt or sour cream can be even better when you want a richer texture. If you’re baking for someone who skips dairy, a non-dairy milk plus lemon juice or vinegar can still do the job.

Why Buttermilk Changes A Recipe

Buttermilk does more than add a mild tang. It brings acidity, and that acidity reacts with baking soda. That reaction helps batter rise and keeps the crumb softer and finer. It also adds a little body, which is why biscuits, pancakes, and snack cakes often taste fuller with buttermilk than with plain milk.

The carton sold in the dairy case is usually cultured buttermilk, not the thin liquid left from old-fashioned butter churning. The federal cultured milk rule allows the name cultured buttermilk for that tangy fermented product, which is why recipes count on both its flavor and its acidity.

That’s why plain milk isn’t always a clean swap. You still get liquid, but you lose the acid that wakes up baking soda. In a recipe built around baking powder alone, that gap may be smaller. In soda-heavy batters, it can leave you with a flatter rise and a duller taste.

How To Make A Substitute For Buttermilk At Home

The quickest homemade version starts with milk and one acidic ingredient. It takes little effort and works in most day-to-day baking. Use a liquid measuring cup so you don’t overpour.

1. Pour 1 tablespoon of lemon juice or white vinegar into the measuring cup.
2. Add milk until the total reaches 1 cup.
3. Stir once or twice.
4. Let it sit for 5 to 10 minutes.
5. Use it as a 1:1 stand-in for 1 cup buttermilk.

You may see a few soft curds. That’s fine. You’re not trying to make fresh buttermilk from scratch. You’re making soured milk that behaves in a similar way in the bowl and in the oven.

If you don’t have lemon juice or vinegar, an ingredient substitution list from Utah State University Extension gives two more one-cup options: 1 cup plain yogurt, or 1 cup milk plus 1 3/4 teaspoons cream of tartar. That gives you a few ways out, even when the fridge looks thin.

Other Easy Swaps That Work

Milk and acid is the default pick, but it isn’t the only one. Yogurt thinned with a splash of milk gives a texture close to buttermilk, with a fuller tang. Sour cream and milk works much the same way, only richer. Kefir is also a near-direct match when you have it.

In test-kitchen baking, King Arthur’s buttermilk substitution tests found that yogurt mixed with milk held up well in simpler recipes where buttermilk flavor stands out more. That makes yogurt a smart pick for biscuits, pancakes, and snack cakes when taste matters as much as rise.

Substitute	How To Mix It	Best Use
Milk + lemon juice	1 tablespoon lemon juice plus milk to make 1 cup; rest 5 to 10 minutes	Cakes, muffins, pancakes, loaf breads
Milk + white vinegar	1 tablespoon vinegar plus milk to make 1 cup; rest 5 to 10 minutes	Biscuits, cornbread, quick breads
Plain yogurt	Use 1 cup as is, or thin with a little milk until pourable	Biscuits, pancakes, snack cakes
Greek yogurt + milk	About 3/4 cup yogurt plus 1/4 cup milk	Thick batters, muffins, scones
Sour cream + milk	About 1/2 cup sour cream plus 1/2 cup milk	Coffee cakes, rich quick breads, dressings
Kefir	Use in an equal amount	Pancakes, cakes, marinades
Milk + cream of tartar	1 3/4 teaspoons cream of tartar plus 1 cup milk	When citrus and vinegar are out
Non-dairy milk + acid	1 tablespoon lemon juice or vinegar plus 1 cup unsweetened non-dairy milk	Dairy-free cakes, muffins, pancakes

Picking The Right Buttermilk Swap For Your Recipe

If you’re making pancakes, waffles, muffins, or a chocolate snack cake, the milk-and-acid method is usually enough. Those batters have sugar, fat, and other flavors that keep the missing cultured flavor from standing out. You still get the acidity the recipe wants, and the crumb stays soft.

For biscuits, soda breads, plain pancakes, or recipes where buttermilk is easy to taste, yogurt is often the better move. It has a fuller fermented flavor, and that can keep the finished bake from tasting flat. Thin it just enough to pour, and stop there. Too much extra milk can slacken the dough.

For ranch dressing, cold dips, or marinades, a richer swap such as yogurt or sour cream beaten with a little milk lands closer to the body of bottled buttermilk. A milk-and-vinegar mix can work in a pinch, but it tastes sharper and thinner, which shows up more in no-bake uses.

If the recipe uses buttermilk as the star ingredient, not just a helper, the smartest move is to buy actual cultured buttermilk. That goes for buttermilk pie, old-school dressings, or chilled soups. In those dishes, the tang is front and center, so a homemade stand-in can taste a bit one-note.

Recipe Type	Best Swap	Small Adjustment
Pancakes and waffles	Milk + lemon juice or vinegar	Let the batter rest a few minutes before cooking
Biscuits and scones	Yogurt + milk	Keep the dough a little shaggy, not wet
Cakes and muffins	Milk + acid or kefir	Match the recipe amount 1:1
Dressings and dips	Sour cream + milk	Thin a spoonful at a time
Dairy-free baking	Unsweetened soy or other plain non-dairy milk + acid	Skip sweetened or flavored cartons

Mistakes That Can Throw Off Texture

A buttermilk substitute is easy, but a few missteps can leave your batter off. The first is guessing the ratio. Don’t pour a cup of milk and then add acid on top. Add the acid first, then fill with milk to the one-cup line. That keeps the liquid amount on target.

The second is skipping the rest time. Five minutes may feel small, yet it gives the acid time to sour the milk and thicken it a little. If you use it right away, the swap still works, but the texture is a touch less close.

• Don’t use sweetened yogurt or flavored non-dairy milk.
• Don’t thin yogurt or sour cream too much.
• Don’t swap plain milk into a baking-soda recipe and expect the same rise.
• Don’t overmix after adding flour; the substitute can’t save a tough batter.

Another snag comes from recipe type. A stand-in is strongest in baked goods. It’s weaker in recipes built around buttermilk’s own taste. If the dish is simple and tang-led, pick yogurt, kefir, or the real thing.

Storage And Make-Ahead Tips

You can mix a buttermilk substitute a little ahead of time, though it’s best the same day. If it sits in the fridge for hours, give it a stir before using. The mix may separate a bit, which is normal.

If you bake often, keep one back-pocket option in the house. Plain yogurt lasts longer than an open carton of buttermilk and pulls double duty at breakfast. Lemon juice and white vinegar stay ready in the pantry or fridge. That means you’re rarely stuck.

Dry buttermilk powder is another pantry option if you use buttermilk a lot. It isn’t in every kitchen, but it stores well and cuts waste from half-used cartons.

A Useful Kitchen Habit

Once you know the basic ratio, buttermilk stops being one of those ingredients that can derail a recipe. For most baking, 1 tablespoon of acid plus enough milk to make 1 cup gets you back on track. When flavor matters more, reach for yogurt, kefir, or sour cream thinned to a pourable texture.

That small habit saves time, cuts grocery runs, and keeps weekend baking easy. Not bad for a carton you forgot to buy.