1 Tablespoon Baking Powder Substitute: Exact Ratio

To replace 1 tablespoon (15 ml) of baking powder, mix ¾ teaspoon (3.5 g) baking soda with 1½ teaspoons (4.5 g) cream of tartar and ¾ teaspoon (2 g) cornstarch. This small-batch substitute gives quick lift in pancakes, biscuits, muffins, and other batters; mix it just before baking because its reaction starts as soon as it gets wet.

Ingredients

¾ teaspoon (3.5 g) baking soda
1½ teaspoons (4.5 g) cream of tartar
¾ teaspoon (2 g) cornstarch

The amounts make about 1 tablespoon (15 ml) of substitute. The baking soda and cream of tartar provide the leavening; cornstarch fills out the volume and helps keep the dry ingredients from clumping. It is not essential to the chemical reaction, but including it makes the measured amount closer to the baking powder called for in a recipe.

Instructions

Measure carefully. Spoon each ingredient into its measuring spoon and level it off. Use a dry spoon and bowl so moisture does not start the reaction early.
Combine the powders. Whisk the baking soda, cream of tartar, and cornstarch in a small bowl for about 30 seconds. If the cream of tartar is lumpy, sift the ingredients together so the leavening is distributed evenly.
Add it to the dry ingredients. Use the full mixture in place of 1 tablespoon baking powder. Whisk it through the flour and other dry ingredients before adding liquids; this helps prevent concentrated pockets of baking soda, which can taste soapy or leave uneven holes.
Finish and bake promptly. Once you combine the wet and dry ingredients, put the batter or dough into the oven or onto the cooking surface without an unnecessary wait. Follow the original recipe’s temperature and baking time; this substitute does not require a separate cooking step.

Tips

Scale the ratio to the recipe. For each teaspoon of baking powder, use ¼ teaspoon (about 1.2 g) baking soda, ½ teaspoon (about 1.5 g) cream of tartar, and ¼ teaspoon (about 0.7 g) cornstarch. Triple that formula for a tablespoon. Avoid using a full tablespoon of baking soda: it would be far too much and can make baked goods taste bitter or soapy.
Keep the ingredients dry. Even a little water can make baking soda and cream of tartar react before they reach the batter. Measure over a dry bowl, close the ingredient containers promptly, and do not use a damp spoon.
Do not add extra acid automatically. The cream of tartar already supplies acid to react with the baking soda. Adding lemon juice or vinegar on top of this formula can change the balance and texture. If the original recipe specifically includes an acidic ingredient, keep it as written unless you are adapting the whole recipe.
Mind the timing. This is a quick-acting homemade blend, not a double-acting commercial baking powder. For the best lift, have the oven heated and pans ready before the wet and dry ingredients meet, especially for muffins, pancakes, and biscuits.

Serving Suggestions

This is a baking ingredient rather than a finished dish, so use it in a recipe that calls for 1 tablespoon of baking powder. It works in many quick breads and batters, including a standard batch of muffins, drop biscuits, pancakes, waffles, or a simple cake. The recipe’s other ingredients still determine its flavor and texture; this blend only replaces the leavening called for.

For pancakes or waffles, cook the mixed batter promptly on a preheated griddle or waffle iron, and avoid stirring it repeatedly once it is combined. For biscuits, handle the dough gently and cut the biscuits soon after mixing so the leavening has a chance to create a light crumb. For muffins or cake, portion the batter into the prepared pan before the chemical reaction has had time to run down.

Do not sprinkle this mixture onto finished food or use it as a table seasoning. It is intended to be evenly incorporated into a recipe’s dry ingredients. If the recipe calls for a different amount of baking powder, scale this formula rather than guessing at a substitute spoonful.

Variations

Without cornstarch: Mix ¾ teaspoon (3.5 g) baking soda and 1½ teaspoons (4.5 g) cream of tartar, then use the entire mixture to replace 1 tablespoon baking powder. The active leaveners are unchanged; the blend simply measures less than a full tablespoon. This is a handy option if you do not keep cornstarch, and it is preferable to adding another ingredient just to fill the measuring spoon.

With lemon juice or vinegar: If you have no cream of tartar, one commonly used alternative is ¾ teaspoon (3.5 g) baking soda plus 1½ teaspoons (7.5 ml) lemon juice or white vinegar for each tablespoon of baking powder being replaced. Stir the liquid acid into the wet ingredients and the soda into the dry ingredients, then combine them and bake promptly. The added liquid is small, but it can still affect a delicate formula; lemon juice may leave a slight citrus note, while vinegar can be noticeable in lightly flavored bakes. Do not combine this alternative with the cream-of-tartar version.

For a recipe with buttermilk or yogurt: You can sometimes use baking soda with an acidic dairy ingredient, but this requires changing the recipe’s liquid balance. For each teaspoon of baking powder replaced, a common starting point is ¼ teaspoon baking soda and ½ cup (120 ml) buttermilk, with an equal amount of another liquid removed. Scaling that approach to a full tablespoon means a substantial amount of dairy, so it is usually not a practical one-for-one swap unless the recipe can accommodate the change.

Using self-rising flour: Self-rising flour contains leavening and salt, so it is not a direct replacement for baking powder by itself. It is useful only when you can replace some or all of the recipe’s all-purpose flour and adjust its salt and leavener accordingly. Check the flour’s label for its stated proportions, since formulations vary, and do not simply add it on top of the existing flour.

Storage and Reheating

This recipe is intended to be mixed and used right away. For the most reliable lift, do not make it in advance or store the mixed substitute as though it were commercial double-acting baking powder: humidity can trigger a reaction, and a small home batch is difficult to test for strength. If you have leftover dry mixture, keep it in a tightly sealed, clearly labeled container in a cool, dry cupboard and use it within a week, but make a fresh batch when dependable rise matters. Discard it if it becomes damp or hard and caked.

The dry substitute itself does not need refrigeration, and there is nothing to reheat. Store baked goods according to the recipe they were used in. Refrigerate bakes with perishable fillings or toppings within 2 hours; most cooked foods keep for 3–4 days in the refrigerator. Reheat leftovers until steaming hot, and do not expect reheating to restore lift if a baked item came out dense.

Frequently Asked Questions

Can I replace 1 tablespoon of baking powder with baking soda alone?

No. Baking soda needs an acid to react and produce the gas that helps a bake rise. Used alone in this quantity, it may leave a strong alkaline or soapy taste and will not reliably work like baking powder. Pair it with cream of tartar using the ratio above, or choose another suitable acid-based alternative.

Is cream of tartar necessary?

It is the simplest dry acid for this particular substitute because it can be mixed with the baking soda before it goes into the batter. If you do not have it, the lemon juice or vinegar variation can work, but it adds liquid and must be used promptly. Do not omit the acid and assume the baking soda will provide the same rise.

Will this work in every recipe that calls for baking powder?

It works in many quick breads, pancakes, muffins, biscuits, and cakes, but results can vary. Commercial baking powder is often double-acting, releasing gas both when moistened and again with heat; this homemade combination is more dependent on a prompt reaction after wet ingredients are added. It is less suitable for recipes that need a long pause between mixing and baking or rely on a particularly predictable rise.

Can I make a larger batch and keep it in the pantry?

For the most dependable outcome, mix only what you need for one recipe. A larger blend can pick up moisture during storage, and then its leavening power may be reduced before you use it. If you do store a small leftover amount, seal it very well, keep it dry, label it, and replace it rather than relying on it after a long time in the cupboard.

Why did my baked goods taste bitter or turn out dense?

A bitter or soapy flavor can come from too much baking soda, poor measuring, or uneven mixing. A dense result can happen if the ingredients were not fresh, the batter sat too long after mixing, or the oven was not ready when the wet and dry ingredients were combined. Measure level spoonfuls, distribute the blend thoroughly through the dry ingredients, and bake promptly.

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