Self-made baking soda First, prepare sugar, salt, flour or starch, stir the sugar and salt evenly, then add flour (if there is no flour, you can add starch), then continue to add a small amount of water to stir, and finally stir until there is no water.

Baking soda is an industrial chemical, which is an acid salt produced by neutralization of strong base and weak acid, and it is weakly alkaline when dissolved in water. Moreover, baking soda is a widely used material in people's daily life and medical clinic.