To substitute 1 teaspoon of baking powder: Combine 1/4 teaspoon baking soda with 1/2 teaspoon white vinegar or 1/2 teaspoon lemon juice. 3. Self-Rising Flour. Self-rising flour has—you guessed it—leavening agents added. For each cup of self-rising flour, you can expect 1/2 to 1 teaspoon baking powder and 1/4 teaspoon salt to be present.
Baking powder is a leavening agent used in baking to help doughs and batters rise. It's a dry, white powder that typically contains a combination of baking soda, cream of tartar, and cornstarch. Baking powder reacts with moisture and heat, releasing carbon dioxide gas that causes the dough to expand, resulting in light, fluffy baked goods. Its abrasiveness helps remove plaque, while its neutralizing properties prevent bacteria from sticking to teeth. Plaque vs. Tartar. Since baking soda whitens teeth by scrubbing off stains, you should see whitening effects immediately after brushing. However, it may take multiple brushings to remove stains thoroughly.Sift together the following, and store in an airtight glass jar: 2 parts cream of tartar. 1 part baking soda. 2 parts arrowroot powder (or 1 part cornstarch) Or to make it up as needed (3): For each teaspoon baking powder called for in the recipe, use 1/4 tsp baking soda and 1/2 tsp cream tartar.