Baking powder is very similar to cream of tartar in what they do to food. If you’re looking for a good substitute for cream of tartar baking powder is the best place to start.
In fact, baking powder actually contains cream of tartar and the only difference between them is the added sodium bicarbonate.
So, you can confidently swap out cream of tartar for baking powder and expect the same great, tasty results. Plus, baking powder is easier to find at the store and will likely already be in your cupboard.
If you plan to substitute cream of tartar with baking powder you’ll need to use double the amount to replicate the results in the recipe.