ammonia powder

Ammonia powder, also known as ammonium bicarbonate or ammonium carbonate (NH₄HCO₃ or (NH₄)₂CO₃), is a chemical leavening agent historically used in baking. In its pure form, ammonia powder is a white crystalline solid that readily releases ammonia gas when heated. It was widely employed as a rising agent before the advent of modern baking soda and baking powder in the late 19th and early 20th centuries, though it remains in use today, particularly in Scandinavian, Eastern European, and Asian baking traditions. When dissolved in liquid or exposed to heat during baking, it decomposes into ammonia gas, carbon dioxide, and water, which create lift in baked goods.\n\nAmmonia powder is distinct from household ammonia cleaner and has no odor in its dry form; the characteristic ammonia smell only develops when the powder is activated by moisture and heat. The ingredient is commercially available in powdered form and must be stored in airtight containers to prevent premature decomposition and ammonia loss.

Ammonia powder functions as a chemical leavening agent in baking, primarily used to achieve light, crispy, and porous textures in cookies, crackers, biscuits, and traditional pastries. It is particularly valued in Scandinavian countries for spice cookies and gingerbreads, in Jewish bakeries for certain holiday breads, and in Asian cuisines for crispy crackers and steamed breads. The leavening action is immediate upon heating, making ammonia powder ideal for recipes where a rapid rise is desired, particularly in thin or small baked goods that benefit from crispy rather than cake-like crumbs. Unlike baking soda and baking powder, ammonia powder leaves no bitter aftertaste and is effective across a wide pH range, making it suitable for recipes without added acidic ingredients.