rounded teaspoon baking soda

Baking soda, or sodium bicarbonate (NaHCO₃), is a naturally occurring alkaline salt commonly mined from mineral deposits and produced synthetically through the Solvay process. It appears as a fine white powder with a slightly salty taste and odorless character. When heated or exposed to acidic conditions, baking soda decomposes to produce carbon dioxide gas, which creates the leavening action essential to baking. The compound is chemically distinct from baking powder, which contains baking soda combined with acidic components and cornstarch.

Baking soda functions as a chemical leavening agent in baked goods, particularly those containing acidic ingredients such as buttermilk, yogurt, citrus juice, or cocoa. It is essential in quick breads, cakes, cookies, pancakes, and certain traditional recipes. Beyond baking, baking soda neutralizes acidic flavors in tomato-based sauces, tenderizes legumes during cooking, and serves as a cleaning agent for equipment. Proper measurement is critical, as excess baking soda creates a bitter, soapy flavor and leaves an alkaline aftertaste.