Definition & Meaning of "egg wash"

What is "egg wash"?

An egg wash is a mixture of beaten eggs, usually whole eggs or egg yolks, and a small amount of liquid, such as water, milk, or cream, that is used to brush onto pastry or dough before baking. It serves multiple purposes, including adding shine and color to the baked goods, helping toppings or seasonings adhere to the surface, and creating a seal to prevent fillings from leaking out. Egg wash is commonly used on bread, pastries, pies, and other baked goods to enhance their appearance and texture.