Emergency Baking Swaps: What to Use When You Are Out of Baking Powder or Soda

Understanding the Chemical Difference

Before swapping, it is vital to know that baking soda is pure sodium bicarbonate, which requires an acid to react. Baking powder is a combination of baking soda and a dry acid (usually cream of tartar). Knowing this helps you balance the pH level of your batter to ensure a proper rise without a soapy or metallic aftertaste. For more detail, see our guide to choose a butter substitute. For more detail, see our guide to substitute sugar.

The Best Substitutes for Baking Powder

If your recipe calls for 1 teaspoon of baking powder, the most reliable swap is mixing 1/4 teaspoon of baking soda with 1/2 teaspoon of cream of tartar. If you do not have cream of tartar, you can use 1/4 teaspoon of baking soda plus 1/2 teaspoon of lemon juice or white vinegar. When using liquid acids, reduce other liquids in the recipe slightly to maintain the correct consistency.

How to Replace Baking Soda

Baking soda is about three to four times stronger than baking powder. If you are out of soda, you can use triple the amount of baking powder requested. For example, replace 1 teaspoon of baking soda with 3 teaspoons of baking powder. Note that this may slightly alter the saltiness or tanginess of the final product due to the extra minerals in the powder.

Mechanical Leavening: The Air Method

In cases where you have neither powder nor soda, you can rely on mechanical leavening. Whip egg whites to soft peaks and gently fold them into your batter. This incorporates air bubbles that expand in the oven, providing lift. This works best for sponges, pancakes, and waffles, though it may result in a lighter, more airy texture than originally intended.

Using Self-Rising Flour

If you have self-rising flour on hand, it already contains baking powder and salt. You can swap your all-purpose flour for self-rising flour and omit the baking powder and salt called for in the recipe. This is one of the most seamless dietary and ingredient adaptations for biscuits and quick breads.