It's common to find baking soda, baking powder, or a mixture of the two on the ingredients list for a baking recipe. But what exactly are they? Baking soda and baking powder are chemical leavening ...
You can make your own baking powder by combining 15ml/1tbsp bicarbonate of soda with 30ml/2tbsp cream of tartar. Measure carefully as too much or too little can upset a recipe’s balance.
But if you are replacing egg in an existing recipe: 1 egg = ½ banana (mashed and added to wet ingredients) + ¼ teaspoon of baking powder ... 1 egg = 1 tablespoon of ground flaxseed + 3 ...