Out of baking powder? It's going to be okay! Try one of these best baking powder substitutes that will work in a pinch.

and the other with 1/2 teaspoon of baking powder. Pour about 15 mL (1 tablespoon) of warm water into two empty cups. Add 1 drop of detergent solution to the water in each cup and gently swirl to mix.

I did a search of online recipes and the most consistent response was that usually you use between 1 to 2 teaspoons of baking powder per 1 cup (150g) of flour. From a scientific point of view ...