t. baking soda

Baking soda, or sodium bicarbonate (NaHCO₃), is a white crystalline salt that occurs naturally as the mineral nahcolite but is most commonly produced synthetically for culinary and industrial applications. It is a base that reacts with acids to produce carbon dioxide gas, water, and a salt. In its pure form, baking soda is odorless, slightly salty-tasting, and highly soluble in water. When combined with acidic ingredients such as buttermilk, lemon juice, vinegar, or acidic spices, it undergoes a chemical reaction that generates bubbles and leavens baked goods immediately upon mixing.

Baking soda functions as a chemical leavening agent in baking, creating lift and a tender crumb in cakes, quick breads, muffins, and cookies. It is essential in recipes containing acidic ingredients, where the acid-base reaction produces carbon dioxide that aerates the batter or dough. Beyond leavening, baking soda neutralizes acidic flavors in cakes and pancakes, promotes browning through the Maillard reaction, and is used in small quantities to tenderize meats and vegetables. It is also employed in Asian cuisine to achieve crispy textures in stir-fried vegetables and fried foods.