Buttermilk is a magical ingredient in baking, giving cakes a tender crumb and biscuits an amazing lift. Its tangy flavor and acidity react with leavening agents like baking soda to create those airy textures we all love. But what happens when you’re halfway through a recipe and realize you’re out of buttermilk? Don’t panic! I’ve tested countless buttermilk substitutes in my kitchen, and I’ve found several reliable options that will save your baking project.
These simple swaps are designed to mimic buttermilk’s unique properties. Whether you need that signature tang or just the right acidity for leavening, these common pantry ingredients will get the job done. Let’s dive into the best buttermilk substitutes I’ve discovered.
Top Substitutes for Buttermilk
1. Milk + Lemon Juice or White Vinegar
Swap ratio: For 1 cup buttermilk: Mix 1 cup milk (whole or 2%) with 1 tablespoon lemon juice or white vinegar. Let stand 5-10 minutes.
Best for: Cakes, muffins, pancakes, scones, quick breads.
This is my absolute favorite and most reliable buttermilk substitute. The acid curdles the milk slightly, mimicking the texture and tang of real buttermilk. It works wonders in almost all baking applications, providing tenderness and helping with leavening. The slight tang is barely noticeable in the final baked good, but the leavening power is there.
Pros:
- Uses common pantry staples.
- Closely mimics buttermilk’s acidity and texture.
- Works in nearly all recipes.
Cons:
- Requires a short waiting time.
- May have a very subtle tang if not fully incorporated.
2. Milk + Cream of Tartar
Swap ratio: For 1 cup buttermilk: Mix 1 cup milk (whole or 2%) with 1 3/4 teaspoons cream of tartar. Whisk until dissolved.
Best for: Cakes, pancakes, waffles, muffins.
Cream of tartar is an acidic powder that creates a similar reaction to lemon juice or vinegar. It’s great when you want to avoid any potential citrus or vinegar flavor. I find this substitute works particularly well in delicate cakes where a clean flavor is essential. Just make sure to whisk it thoroughly to avoid clumps.
Pros:
- Provides good acidity for leavening.
- No noticeable flavor addition.
- Easy to mix.
Cons:
- Cream of tartar might not be a common pantry item for everyone.
- Slightly less tang than milk + acid.
3. Plain Yogurt or Sour Cream
Swap ratio: For 1 cup buttermilk: Mix 3/4 cup plain yogurt or sour cream with 1/4 cup milk or water.
Best for: Cakes, muffins, quick breads, dips, dressings.
Yogurt and sour cream are naturally tangy and have a similar thick consistency. When thinned with a little milk or water, they create a fantastic substitute. I love using this for richer baked goods like pound cakes or muffins where that extra bit of fat contributes to a moist crumb. It adds a wonderful richness.
Pros:
- Adds richness and moisture.
- Tangy flavor is a good match.
- Readily available.
Cons:
- Can make baked goods denser if not balanced with leavening.
- May require extra thinning.
4. Kefir
Swap ratio: 1:1 swap
Best for: Pancakes, waffles, smoothies, marinades.
Kefir is a fermented milk drink that’s naturally tangy and slightly effervescent, much like buttermilk. I often have kefir on hand for smoothies, so it’s a convenient swap. Its consistency is usually quite close to buttermilk. It works beautifully in recipes where you want that signature tang and leavening power, especially for breakfast items.
Pros:
- Natural tang and fermentation.
- Great consistency.
- Healthy probiotic benefits.
Cons:
- Flavor can be more pronounced than other substitutes.
- May not be readily available everywhere.
5. Evaporated Milk + Water + Acid
Swap ratio: For 1 cup buttermilk: Mix 1/2 cup evaporated milk + 1/2 cup water + 1 tablespoon lemon juice or white vinegar. Let stand 5-10 minutes.
Best for: Cakes, cookies, quick breads.
This is a clever substitute when you only have shelf-stable milk products. Evaporated milk has a concentrated flavor and creamy texture that, when diluted and acidified, surprisingly mimics buttermilk well. I’ve used this in a pinch for cookies and cakes, and the results were excellent. It offers a reliable richness.
Pros:
- Uses shelf-stable ingredients.
- Provides good richness.
- Reliable leavening.
Cons:
- Requires a waiting period.
- Less common ingredient than regular milk.
6. Ricotta Cheese
Swap ratio: For 1 cup buttermilk: Blend 3/4 cup ricotta cheese with 1/4 cup milk or water until smooth.
Best for: Cakes, muffins, pancakes.
Ricotta cheese, when blended smooth with a bit of liquid, can offer a similar texture and mild tang. It’s not as acidic as traditional buttermilk, so you might need to adjust your leavening slightly in some recipes. I find it best in recipes where you want a tender crumb and don’t need a strong acidic reaction, like in some cake recipes.
Pros:
- Adds moisture and tenderness.
- Mild flavor.
- Can be whipped smooth.
Cons:
- Needs to be blended well to avoid curds.
- Lower acidity may affect leavening.
- Can be slightly grainy if not fully blended.
7. Buttermilk Powder + Water
Swap ratio: For 1 cup buttermilk: Mix 1/4 cup buttermilk powder + 1 cup water.
Best for: All baking applications.
This is the closest you’ll get to the real deal if you have buttermilk powder. It contains the dried solids and cultures of buttermilk, so the flavor and acidity are spot on. I always keep a container of this in my pantry for emergencies. It dissolves easily and provides consistent results every time, making it a foolproof option.
Pros:
- Closest flavor and acidity to real buttermilk.
- Long shelf life.
- Easy to measure and mix.
Cons:
- Requires purchasing a specific product.
- Can sometimes be hard to find.
When to Use the Real Thing
While these substitutes are fantastic, there are times when you might want to stick with the real thing. If a recipe specifically calls for buttermilk for its unique culturing and intense tang, like in certain artisan breads or very delicate custards, a substitute might alter the final flavor profile more than you’d like. Also, if you’re making a simple buttermilk dressing or marinade where the pure, unadulterated flavor is key, the subtle differences from a substitute might be noticeable. For these specific instances, tracking down actual buttermilk is your best bet.
Common Mistakes to Avoid
- Not letting the milk mixture sit long enough for the acid to curdle.
- Using fat-free milk for substitutes that require richness (like yogurt/sour cream swaps).
- Forgetting to whisk thoroughly, leaving lumps of powder or unincorporated acid.
Frequently Asked Questions
Can I use sweet milk as a substitute?
No, sweet milk lacks the acidity needed to react with leavening agents like baking soda. You must add an acid like lemon juice, vinegar, or use a fermented product.
Does the type of milk matter for the milk + acid substitute?
Whole or 2% milk works best as they provide a richer texture. Skim milk can be used, but the final product may be slightly less tender.
How much buttermilk substitute do I need?
In most cases, you can use the substitute in a 1:1 ratio for the amount of buttermilk called for in the recipe.
Will my baked goods taste like vinegar or lemon?
Typically, no. The amount of acid used is small, and the flavor is usually masked by other ingredients. The reaction primarily affects texture and leavening.
Can I use non-dairy milk?
Yes, you can use unsweetened non-dairy milk (like almond, soy, or oat) with lemon juice or vinegar. The texture might be slightly different, but it works.
Are these substitutes good for drinking?
These substitutes are designed for baking and cooking. They do not replicate the taste or texture of drinking buttermilk.
I'm Julia. I cook restaurant copycat recipes at home and share what works. Every recipe on this site is tested at least three times in my own kitchen before I publish it.