An egg wash is a mixture of beaten eggs, often combined with a small amount of water or milk, used to enhance the appearance of baked goods. It is typically brushed onto the surface of items like bread, pastries, or cookies before baking. The egg wash gives a shiny, golden-brown finish, making the final product more visually appealing. In addition to improving appearance, an egg wash can also help toppings adhere better. For example, sesame seeds or coarse salt can be sprinkled on top of the egg wash before baking, ensuring they stick to the surface of the dough.