HOMEMADE SUBSTITUTE FOR BAKING POWDER<br />
2 tbsp. cream of tartar 1 tbsp. baking soda 1 tbsp. cornstarch<br />
Sift together. Store in airtight container. One teaspoon of this is equal to 1 teaspoon store bought baking powder.<br />
Source: www.cooks.com<br />
Baking powder has two active ingredients: <br />
Cream of tartar (tartaric acid) and baking soda (sodium bicarbonate).
Me too, I just googled it
try baking soda