teaspoon baking powder

Baking powder is a dry chemical leavening agent composed of an alkaline compound (typically sodium bicarbonate), one or more acidic components (such as cream of tartar or sodium aluminum sulfate), and a moisture-absorbing filler (usually cornstarch). It is a refined, industrially-produced ingredient that reacts with liquids and heat to produce carbon dioxide gas, which creates lift and volume in batters and doughs. The ingredient emerged in the mid-19th century as a more convenient alternative to yeast and potassium bicarbonate. Modern baking powder is typically "double-acting," meaning it releases carbon dioxide both when moistened and when heated, providing extended leavening action during the baking process.

Baking powder is essential in quick breads, cakes, cookies, and pastries where rapid rise without fermentation is desired. It is added to flour-based batters to create tender crumb structures and increased volume. Common applications include pancakes, biscuits, muffins, sponge cakes, and donuts. The ingredient functions by producing gas bubbles uniformly throughout the batter, resulting in even texture and light crumb. Proper measurement is critical; too little fails to leaven adequately, while excess can produce bitter flavors and uneven browning. Baking powder is typically sifted with dry ingredients before wet components are incorporated to ensure even distribution.