What is the purpose of emulsifiers in batters and fillings?

• A. Improve stability of emulsions, air bubble stability, and crumb texture.
• B. Increase sweetness and browning.
• C. Harden the structure by forming gels.
• D. Decrease viscosity to make pouring easier.

Answer: (B)

Emulsifiers in batters and fillings primarily improve the stability of mixtures that contain fat and water, help air bubbles stay intact, and contribute to a fine, uniform crumb. They do this by lowering the interfacial tension between oil and water, allowing fats to stay evenly dispersed and preventing separation as the batter bakes. When the batter is beaten to incorporate air, emulsifiers also help keep those air pockets stable, which leads to a tender, light texture in the final product. This is why their main role is about emulsions, foam stability, and texture, not about increasing sweetness or browning, which come from sugars, amino acids, and heat reactions. They also don’t primarily form gels or simply thin the batter; those functions come from other ingredients.