How Do You Make Substitute Baking Powder?
Look for bicarbonate of soda / baking soda in your pantry. Follow any of the suggested methods depending on what else you have available. Each will substitute well for baking powder and will be sufficient to help one level cup of sifted flour to rise. Add 3/4 teaspoon of bicarbonate of soda with 3/4 cup completely sour milk. Add 3/4 teaspoon of bicarbonate of soda with 1/2 cup of golden syrup or treacle. Add 3/4 teaspoon of bicarbonate of soda with 1 tablespoon of vinegar. Use 2 parts of bicarbonate of soda mixed with 1 part of cream of tartar and 1 part cornstarch. Cornstarch slows the acidic reaction of the cream of tartar on the alkaline baking soda, which maintains the leavening ability for longer.
