👉 Baking fluid, also known as baking soda or bicarbonate of soda, is a chemical leavening agent used in baking to produce carbon dioxide gas, which helps dough and baked goods rise. It works by reacting with acidic ingredients, such as buttermilk, yogurt, or lemon juice, to release carbon dioxide. This reaction creates bubbles that expand within the dough, causing it to lighten and become fluffy. When baking fluid is combined with an acid, it neutralizes the acid, triggering the reaction and producing carbon dioxide that helps baked goods achieve their desired texture and volume.