You will need
    • teaspoon baking soda
    • 4-6 drops of 9% vinegar
Pour the desired amount of soda in a spoon. Usually the recipe is the exact proportion, from 0.5 teaspoon to 1 tablespoon.
Squeeze in a little spoon of 9% vinegar. One teaspoon is enough for 4-6 drops. It is not recommended to use undiluted vinegar.
The spoon will begin a rapid chemical reaction. The soda will begin to sizzle and foam. During quenching soda vinegar should not wait until the end of the reaction, quenched immediately stir in the baking soda into the batter. The reaction between baking soda and acid will continue after kneading.
Kneaded dough is immediately put into the preheated oven. Then, the finished pastries will get quite lush and beautiful.