Milk & Cream
Buttermilk Substitute
How to make dairy-free buttermilk with plant milk and an acid, plus which recipes the swap actually matters in.
Buttermilk is the easiest dairy swap there is, because you are mostly after acidity. Stir an acid into plant milk, wait ten minutes, and it does the same job in pancakes and biscuits: it adds tang and gives baking soda something to react with. Soy milk curdles the most convincingly, which is a good thing here. Oat and almond thicken less but still work.
Best dairy-free substitutes
| Substitute | Ratio | Notes |
|---|---|---|
| Soy milk + lemon juice or vinegar | 1 cup + 1 tbsp acid | Thickens visibly in 5 to 10 minutes. The closest stand-in. |
| Oat or almond milk + acid | 1 cup + 1 tbsp acid | Less visible curdle, same acidity. Fine for most baking. |
| Dairy-free yogurt thinned with plant milk | 3/4 cup yogurt + 1/4 cup milk | Thicker body for dressings and marinades. |
| Plant milk + cream of tartar | 1 cup + 1.75 tsp | For when you do not want any lemon or vinegar flavor. |
Nothing special to buy here. Plant milk plus an acid covers nearly every recipe that calls for buttermilk.
Best for
- Pancakes and waffles.
- Biscuits and quick breads where baking soda needs an acid to rise.
- Ranch-style dressings.
- Chicken marinades where the acid tenderizes.
Avoid when
- The plant milk is sweetened or flavored. Vanilla buttermilk biscuits are not the goal.
- A recipe needs true cultured tang, like some overnight doughs. Stir in a spoonful of dairy-free yogurt for that.
- You skip the rest time. The acid needs a few minutes to work.
Common questions
How do I make dairy-free buttermilk?
Stir 1 tablespoon of lemon juice or white vinegar into 1 cup of unsweetened plant milk and let it sit 5 to 10 minutes. Soy milk gives the thickest result.
Which plant milk works best for buttermilk?
Soy. Its protein reacts with the acid and visibly thickens, like the real thing. Oat and almond stay thinner, but the chemistry for baking still works.
Can I just skip the buttermilk in a recipe?
If the recipe uses baking soda, no. The soda needs the acid to rise and to neutralize its flavor. Use the plant milk and acid combo instead of plain milk.
Get new dairy-free comfort food recipes
New recipes, substitution tips, and classic dishes rebuilt without dairy.
Recipes using this substitute
Dairy-Free Buttermilk Pancakes
Tall, tangy dairy-free buttermilk pancakes made with lemon-soured oat milk and dairy-free butter for that classic diner-style lift and flavor.
Dairy-Free Pancakes
Fluffy dairy-free pancakes made with oat milk and dairy-free butter, no buttermilk step required.
Dairy-Free Ranch Dressing
A dairy-free ranch dressing with real buttermilk tang, fresh dill, parsley, chives, and garlic, good as a dip, dressing, or drizzle.