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I don't mean to be dramatic when I say coffee grinders are both the biggest mystery in coffee, and also coffee's biggest hive of technological invention.

If you find yourself in the online rabbit holes of the coffee world these days, you'll almost certainly encounter a bean geek eager to tell you a secret. The secret is that your coffee grinder is more important to how your coffee tastes than your drip brewer , and also more important than your espresso maker .

This idea makes some sense. Just like temperature and time and pressure, the size of your coffee grounds will determine how fast y

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