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If you’re interested in baking, you’ve probably come across recipes that call for egg wash. But what is an egg wash? The name doesn’t give you much. Is it clean eggs? Something for your hair? A new skin treatment?

The answer is none of the above, but the point stands: egg wash can seem confusing. So let’s take a look at what it is, how to make it, and why it’s going to be your new favorite secret weapon in the kitchen.