baking soda

A leavening agent which reacts when combined with an acid such as buttermilk, yogurt or molasses producing carbon dioxide bubbles which cause a dough to rise. If such a thing as 'baking soda' does not exist in your country, look for it at the chemist's, where it's usually known as sodium bicarbonate. To test baking soda for freshness: Add 1 teaspoon of baking soda to 1/2 cup of hot water. The soda will actively bubble if it is fresh.

Here are some recipes with baking soda: