How to Make Baking Powder
- 1). Combine the cream of tartar, baking soda and cornstarch in a mixing bowl.
- 2). Mix the powders until blended.
- 3). Store your new baking powder in an airtight container. Be sure that the container is airtight, or the powder will not remain fresh.
- 4). Place the baking powder in the refrigerator and store there until you are ready to use.
