Cream of tartar can be found in the baking aisle of your local grocery store.

Baking powder can be stored indefinitely. You can check if your baking soda is fresh by pouring hot water on it and seeing if it bubbles. [3] X Research source

Lemon juice can affect the flavor of your baked goods if you use too much. If you don’t want added citrus flavor, do not use lemon juice.

This creates a single-acting baking powder. Store-bought baking powder is usually double-acting, meaning it leavens your batter when it’s first mixed and when it cooks. Cook the batter once you mix in the baking powder.

Check the dairy section of your local grocer for Greek yogurt or buttermilk.

If there are other dairy products in your recipe, reduce their amounts first. Then adjust the levels of any extracts or flavorings you would normally add to the recipe. This may affect the flavor and bake of your recipe.

Use the batter right away to get the baking powder’s full effect.