An egg wash is a mixture made from beaten egg and a liquid, usually water or milk. Egg wash is typically brushed onto a pastry before baking,
Egg wash is usually used to bind the pastry and any toppings together, and to give it a golden brown color when baking.
To make an egg wash, combine 2 teaspoons of water or milk for every beaten egg. Less liquid will make for a darker egg wash.
Egg wash
Brushing an egg wash onto biscuits prior to baking.