Meaning of BAKING POWDER in English

BAKING POWDER

A leavening agent of which the most common is double-acting baking powder, called so because it reacts first with liquids and secondly, with the heat during baking. A good substitute for 1 teaspoon of baking powder is 1/4 teaspoon baking soda plus 1/2 teaspoon cream of tartar. Periodically, check the expiration date on your can as baking powder loses its leavening power over time.

English dictionary of cooking and food terms.      Английский словарь терминов приготовления и условий питания.