What is the meaning of trapping air in cooking?

Trapping air in cooking refers to the incorporation of air into ingredients to create a lighter, fluffier texture in dishes. This technique is commonly used in baking, such as when whipping egg whites or cream, where air bubbles are suspended in the mixture. The trapped air expands during cooking, helping baked goods rise and achieve a desirable consistency. It's also employed in techniques like aerating batters and emulsifying sauces to enhance their texture and volume.