What does beat until light mean in cooking terms?

"Beat until light" is a cooking term that refers to the process of beating an ingredient, such as eggs, cream, or butter, until it becomes pale yellow in colour and fluffy in texture. This is done by rapidly incorporating air into the ingredient using a whisk, electric beater, or stand mixer. The process helps to lighten and aerate the mixture, which makes it ideal for baking purposes, such as in making cakes, mousses, and custards. Beating an ingredient until light also helps to improve its volume and can help to create a smooth and creamy texture.