beaten egg for glazing

Beaten egg, also known as egg wash, is a simple mixture of raw egg (whole eggs, egg whites, or egg yolks) whisked with a small amount of liquid—typically water, milk, or cream—used as a coating for baked goods prior to baking. The practice dates back centuries in European baking traditions and remains fundamental to pastry and bread-making worldwide. When applied to dough or pastry surfaces and exposed to oven heat, the proteins in the egg coagulate and the fats render, creating a glossy, golden-brown, or matte finish depending on the egg component used and the liquid added.

The composition of the egg wash directly affects the final appearance: whole egg or egg yolk washes produce a rich, deep golden-brown shine with a slightly glazed texture, while egg white washes yield a more matte, crisp, and lighter finish. The addition of milk or cream adds richness and promotes browning through increased fat content, whereas water creates a more neutral medium.

Beaten egg wash is applied to the surface of pastries, breads, and pies before baking to enhance browning, create visual appeal, and seal seams or edges. It is essential in French pastry work, particularly for croissants, Danish pastries, and pâte feuilletée applications, where a uniform, appetizing sheen is desired. Egg wash is also used on savory baked goods such as challah, brioche, and pie crusts, and sometimes combined with seeds, salt, or herbs for textural and flavor variations.

The technique requires brushing the wash onto dough gently using a pastry brush to ensure even coverage without deflating laminated doughs. Timing is critical: application should occur just before baking to prevent the wash from drying and cracking on the surface.