Homemade Baking Powder

makes 1 tablespoon plus 1 teaspoon (or 4 teaspoons)

Oddly enough, some recipes say to use this mix immediately. Why the rush? I mean all these ingredients store pretty well, and it’s not like they perform their chemical reaction as soon as they’re mixed, right?

1 teaspoon baking soda

2 teaspoons cream of tartar

1 teaspoon cornstarch

Whisk all ingredients together to mix well. Use as directed in whatever recipe you are following.