What is mechanical aeration in food?

Mechanical aeration in food refers to the process of incorporating air into mixtures to create a lighter and fluffier texture. This is commonly achieved through techniques like whisking, beating, or blending, which physically agitate the ingredients. Examples include whipping cream or egg whites to create meringue, where air bubbles are trapped in the mixture, leading to volume and a delicate structure. It plays a crucial role in baking and other culinary applications to enhance the final product's texture and mouthfeel.