What is an egg wash used for in baking?

Answer It gives a glossy finish and promotes browning.

An egg wash is simply egg beaten with a bit of milk. cream or water that is brushed on bread, pies or other baked goods to give them a shiny, glossy finish. If just the white is used, it will not enhance browning. A whole egg or just egg yolk will also enhance the browning as well.

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