Buttermilk Substitute – 10 Easy Alternatives You Can Use in Baking and Cooking

Written By: Katty, Home Cook & Food Writer

You’re halfway through your pancake recipe… and then it hits you — no buttermilk!

We’ve all been there. You’re mixing up your favorite muffins or biscuits when you suddenly realize you’re missing one key ingredient: buttermilk. Before you rush to the store, relax — you can make a buttermilk substitute at home using simple pantry ingredients.

As someone who’s optimized 100+ food content sites and tested endless kitchen hacks, I’ve learned that the question “what can I substitute for buttermilk?” is one of the most common kitchen searches online. The good news? There are easy, reliable answers.

In this post, you’ll learn how to make buttermilk substitutes, which options work best in baking, and even vegan buttermilk alternatives for dairy-free cooks.

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What Is Buttermilk and Why It’s Used in Recipes

Before we dive into substitutions, let’s understand what makes buttermilk so special.

Buttermilk is a slightly acidic dairy product traditionally made as a byproduct of butter churning, though modern buttermilk is cultured milk. Its acidity reacts with baking soda and baking powder, helping baked goods rise while creating a tender crumb and subtle tangy flavor.

Traditional buttermilk was the tangy liquid left behind after churning butter. Today’s cultured buttermilk is milk fermented with lactic acid bacteria, giving it a slightly thick texture and tangy flavor.

In cooking, buttermilk is commonly used to:

• Tenderize meats
• Add moisture to cakes, biscuits, and pancakes
• Create crisp coatings for fried foods

It’s a baking superstar because:

• The acidity reacts with baking soda, creating light and fluffy textures.
• It adds moisture and tenderness to cakes, pancakes, and biscuits.
• Its sour flavor balances sweetness and enhances richness.

So, when finding a substitute for buttermilk in baking, the goal is to mimic that perfect balance of acidity + creaminess.

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👉 Explore more guides on SubstituteShelf.com:

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The 10 Best Buttermilk Substitutes for Baking and Cooking

Here are ten practical, kitchen-tested substitutes for buttermilk — from classic milk mixtures to modern non-dairy options.

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1. Milk + Lemon Juice (Classic Buttermilk Substitute Recipe)

Ratio: 1 cup milk + 1 tablespoon lemon juice
How to Make: Stir, then let it sit for 10 minutes to curdle.

Why it works: The acid in lemon juice curdles the milk slightly, mimicking buttermilk’s tang and acidity.

Best for: Pancakes, biscuits, cakes, and waffles.
Tip: Whole milk works best for baking since it provides a creamy texture.

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2. Milk + White Vinegar

Ratio: 1 cup milk + 1 tablespoon white vinegar
Let it rest: 5–10 minutes before using.

Why it works: The vinegar reacts with milk proteins to create a quick buttermilk substitution for baking.
Best for: Fried chicken, cornbread, and biscuits.

🧈 Quick Tip: Vinegar gives a stronger tang — ideal for savory dishes.

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3. Milk + Cream of Tartar

Ratio: 1 cup milk + 1¾ teaspoons cream of tartar

If you’re out of citrus or vinegar, cream of tartar is your next hero. It’s acidic enough to curdle milk and create a neutral-tasting substitute for buttermilk in baking.

Best for: Chocolate cakes, cupcakes, and recipes where lemon flavor isn’t desired.

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4. Sour Cream + Water (or Milk)

Ratio: ¾ cup sour cream + ¼ cup milk**

Sour cream contains lactic acid, which gives you that tangy flavor and a rich texture.

Best for: Cakes, muffins, and quick breads.
Bonus: It produces incredibly moist bakes.

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5. Plain Yogurt + Milk or Water

Ratio: ¾ cup plain yogurt + ¼ cup milk**

This is one of the easiest recipe substitutions for buttermilk. Yogurt provides the acidity; milk adjusts the consistency.

Best for: Pancakes, waffles, and muffins.
Pro Tip: Greek yogurt works too — just thin it with a tablespoon of water.

(Internal link anchor: “See our Yogurt Substitute Guide”)

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🧈 Quick Summary:

• Milk + lemon juice = light and fluffy texture
• Vinegar = strong tang for savory dishes
• Yogurt or sour cream = rich and moist bakes

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6. Milk + Kefir (Fermented Dairy Substitute)

Ratio: 1 cup kefir = 1 cup buttermilk substitute**

Kefir is a cultured, tangy dairy drink with live bacteria — very close in flavor to traditional buttermilk.

Best for: Pancakes, cakes, and salad dressings.

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7. Milk + Slightly Sour Milk

If your milk has just started to sour (smells tangy but not spoiled), it can act as a natural substitute buttermilk.

Ratio: Use 1:1 for any recipe.
Best for: Rustic breads and biscuits.
Note: Never use spoiled milk with an off taste or odor.

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8. Buttermilk Powder + Water

Ratio: ¼ cup powder + 1 cup water = 1 cup buttermilk substitute.**

A pantry lifesaver! Buttermilk powder gives authentic flavor and texture without refrigeration.

Best for: Waffles, pancakes, and baking mixes.
Storage Tip: Keep it sealed and dry — lasts months.

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Dairy-Free and Vegan Buttermilk Substitutes

If you’re lactose-intolerant or vegan, these non-dairy buttermilk substitutes are perfect for you. You can easily make a vegan buttermilk substitute using plant-based milk.

Non-Dairy Milk + Acid

Best plant milks:

• Soy milk (best curdling)
• Oat milk
• Almond milk

9. Soy Milk + Lemon Juice or Vinegar

Ratio: 1 cup soy milk + 1 tablespoon lemon juice/vinegar**

Why it works: The acid curdles soy milk just like real milk, producing a vegan buttermilk alternative with the same tang.

Best for: Vegan pancakes, muffins, and cakes.
Pro Tip: Let it rest 10 minutes to curdle properly.

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10. Almond Milk or Coconut Milk + Lemon Juice

Ratio: 1 cup almond or coconut milk + 1 tablespoon lemon juice.**

Why it works: Acid + non-dairy milk = perfect non-dairy buttermilk replacement.
Best for: Vegan desserts, light muffins, and quick breads.

Tip: Coconut milk adds richness — great for tropical bakes.

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🧈 Quick Summary (Vegan Options):

• Soy milk + vinegar → best for vegan buttermilk recipes.
• Almond milk + lemon → perfect for lighter desserts.
• Coconut milk + lemon → richer, creamier flavor.

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Expert Tips for Perfect Buttermilk Substitution

After testing these buttermilk substitutions in baking, here’s what I’ve learned:

• Let it sit 5–10 minutes — the curdling improves texture.
• Use room-temperature milk to prevent curdling shock.
• Adjust liquids if your batter feels too thin.
• For mild tang, reduce lemon juice or vinegar by half.

💬 Pro Insight from Katty:
Always give your substitute a quick taste. It should be lightly tangy, not sour — that’s when it’s perfect for baking.

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Best Buttermilk Substitute (Milk + Acid Method)

The milk and acid method is the closest and most reliable substitute for buttermilk in baking and cooking.

How to Make 1 Cup Buttermilk Substitute

Ingredients:

• 1 tablespoon white vinegar or lemon juice
• Enough milk to reach 1 cup (whole or 2% preferred)

Instructions:

1. Add vinegar or lemon juice to a liquid measuring cup.
2. Fill with milk to the 1-cup line.
3. Stir gently and let sit for 5–10 minutes.
4. Use immediately as a 1:1 replacement.

This method works for cakes, pancakes, biscuits, muffins, and quick breads.

Buttermilk Substitute by Recipe Type

Recipe Type	Best Substitute
Baking (cakes, muffins)	Milk + vinegar or yogurt
Pancakes & waffles	Milk + lemon juice
Fried chicken	Yogurt or kefir
Biscuits	Whole milk + vinegar
Marinades	Yogurt or sour cream

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What Happens If You Use Milk Instead of Buttermilk?

Using plain milk without acid removes the chemical reaction needed for leavening. This can result in:

• Denser baked goods
• Less rise
• Reduced tangy flavor

Always add an acid when substituting milk for buttermilk in baking.

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Common Mistakes When Substituting Buttermilk

• Skipping the resting time after adding acid
• Using flavored or sweetened yogurt
• Heating the milk before adding acid
• Forgetting to adjust leavening agents

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FAQs About Buttermilk Substitutes

1. What can I substitute for buttermilk in baking?
You can use 1 cup milk + 1 tablespoon lemon juice or vinegar. Let it rest 10 minutes before adding to your recipe.

2. Can I skip buttermilk entirely?
Yes, but your cakes and pancakes will be denser. Always use an acidic substitute for best results.

3. Does Greek yogurt work as a substitute for buttermilk?
Yes! Thin it with milk or water and it acts just like buttermilk.

4. What’s the best vegan substitute for buttermilk?
Soy milk + vinegar or almond milk + lemon juice.

5. How long can homemade buttermilk substitute last?
Refrigerate for up to 3 days in an airtight container. Shake before use.

6. What Is the Best Substitute for Buttermilk?

Milk mixed with vinegar or lemon juice is the closest substitute in most recipes.

7. How Do You Make 1 Cup of Buttermilk?

Add 1 tablespoon vinegar or lemon juice to a measuring cup, then fill with milk to 1 cup.

8. Can I Use Milk Instead of Buttermilk?

Yes, but only if you add an acid to replicate buttermilk’s acidity.

9. Does a Buttermilk Substitute Work the Same in Baking?

Yes, when properly made, most substitutes perform very similarly in baking recipes.

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Final Thoughts: Never Run Out of Buttermilk Again

Next time you realize you’re out of buttermilk, don’t panic — there’s always a substitute for buttermilk within reach. Whether you mix milk and lemon juice or try a vegan buttermilk substitute, you can keep baking without missing a beat.

Cooking is about creativity and confidence — and with these easy swaps, you’ll always have a way to make your recipe work.