Yes, baking powder or baking soda can be added to a recipe involving flour, salt, bran cereal, milk, egg and shortening or vegetable oil
Explanation:
Baking powder is used in a baking recipe as a leavening and a rising agent.
A leavening agent is added in a recipe helps to expand dough or batter mix by releasing bubbles of gas in the dough or batter mix. leavening or raising agents like baking powder, yeast, baking soda etc helps to produce porous baking products.
Baking powder/baking soda is a chemical leavening agent and a combination of an alkali and an acid in a filler base made up of rice or corn flour.
These help to raise the cake or baked product by releasing gas bubbles of carbon dioxide into the mixture. This helps to produce soft, fluffy and spongy cakes.