Ammonia is used in cooking mostly in the food industry as a blowing agent and acidity regulator. Nowadays, it has been replaced by cooking soda. Ammonia is called the ammonium carbonate NH4HCO3. It is a white powder or white or transparent crystal mass with an ammonia scent. Ammonia is used as auxiliary substance of food that is also called ammonium bicarbonate and has a chemical formula NH4HCO3.