Breaking glass into the ice well. Mangling the classics. Blender explosions. Serving a "virgin" cocktail to an eight-year-old and figuring out—it isn't. When orders are coming in fast, any number of things can go wrong behind the bar. We asked 24 bartenders about the worst mistakes they've ever made behind the bar. Here's what they had to say.

What's the worst mistake you've ever witnessed at a bar?

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