First: What Is the Fourth Side?
On a standard box grater, you’ll usually find:
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Large holes – for shredding cheese, vegetables, and more
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Medium holes – for finer shreds
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Slicing blade – for thin slices
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Very small, rough holes – often called the “fine grate” or “zesting” side
It’s that fourth side — the tiny, spiky-looking surface — that most people ignore.
But it’s not there by accident.