A grinder is a tool used to shred and break down cannabis flower into smaller pieces. That ground flower can then be rolled into a joint, packed into a bowl, infused with butter——whatever your heart desires. That said, not all grinders are created equal and the best are usually made from high-quality metals like stainless steel or titanium. Here's a tip if you're in a pinch: You can always place your flower in a shot glass and insert scissors to chop up the herb.
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