Amount of self rising flour to equal baking soda powder?

You can't directly substitute self-rising flour for baking soda. Here's why:

* Self-rising flour already contains baking powder. This is a combination of baking soda and an acid, typically cream of tartar.

* Baking soda requires an acid to activate. This creates the chemical reaction that produces carbon dioxide bubbles, making cakes rise.

What to do instead:

1. Use the recipe as written: If the recipe calls for self-rising flour, stick with it. The recipe is balanced for the leavening properties of the flour.

2. Convert a recipe to use all-purpose flour: If you only have all-purpose flour, you can add your own baking powder and salt. For every cup of all-purpose flour, add:

* 1 1/2 teaspoons baking powder

* 1/4 teaspoon salt

Remember: Baking soda and baking powder are not interchangeable. They have different chemical properties and work differently in baking.