Omelet Soufflé

Whipping egg whites creates a foam structure where air bubbles are trapped by unfolded proteins. The addition of sugar stabilizes these proteins, preventing collapse. Using only 4 yolks (instead of 6) reduces the mixture's density, allowing the whipped whites to lift the soufflé more effectively. Baking in a "quick" (hot) oven sets the protein structure rapidly before the air bubbles can escape, creating the characteristic rise.