Baking Soda and Cream of Tartar (Best Option)
1/4 teaspoon baking soda + 1/2 teaspoon cream of tartar per 1 teaspoon baking powderBaking powder is essentially a combination of baking soda (a base) and an acid (often cream of tartar) that react to produce carbon dioxide gas, which helps leaven baked goods. In stew, this reaction can help tenderize and slightly aerate components if baking powder is used in a thickening or dumpling component.
To replicate this, combining baking soda and cream of tartar in the correct ratio mimics the leavening effect. It’s important to mix them thoroughly to ensure even reaction and avoid localized bitterness from baking soda.
Compared to commercial baking powder, this substitute provides a fresher and more controlled leavening effect, with no additional fillers or stabilizers, resulting in a similar texture and rise in stew dumplings or thickened components.