Baking powder is extensively used in making breads, cakes and in some fries. It is a mixture of Sodium-bi-carbonate (Baking Soda), starch and is used as a leavening (raising) agent. It should be stored in air tight container and looses its property very easily. When the baking powder is mixed in a batter with the wet ingredients, the dry acid and the baking soda can then react together and release carbon dioxide.