What functional roles do eggs provide in most cake batters?

• A. Bind, color, and moisture.
• B. Bind, structure, emulsify fat and liquid, color, and moisture.
• C. Flavor and aroma only.
• D. Color and sweetness only.

Answer: (B)

Eggs in cake batters provide several functions: they help bind ingredients, contribute to structure, emulsify fats and liquids, add color, and supply moisture. The proteins in egg white and yolk coagulate when heated, forming a network that gives the batter its shape and a tender, springy crumb. The yolk contains emulsifiers like lecithin, which helps fat mix evenly with liquids, creating a smooth, uniform batter and preventing separation. Yolks also carry pigments that deepen color, while the liquid content of eggs adds moisture to keep the cake soft and tender. While flavor and aroma come from other ingredients, and sweetness is not a primary role of eggs, these structural, textural, and moistening functions make this set of roles the best description of what eggs provide in most cake batters.