Active Time

　　5 min

　　Total Time

　　5 min

　　Edna Lewis trained Peacock's palate to detect the metallic undertones that commercial baking powders can impart, and he's never looked back. Here's their formula.

Ingredients

　　1/4 cup cream of tartar

　　2 tablespoons baking soda

　　Sift together cream of tartar and baking soda 3 times, then transfer to a clean dry jar and seal tightly.

　　Cooks' notes:

　　·Baking powder keeps in a cool, dark place 6 weeks.

　　·Homemade baking powder can be used in any recipe calling for commercial baking powder (and in the same quantity).