What exactly is this aromatic veggie?

Found this at the farmers market today, appears to be some sort of green onion/garlic. It sorta reminds me of both, or a cross between them. Smells sweet, fresh, and pungent. Can anyone tell me more specific info, such as a name or exact type? Also looking for suggestions for how I might best use it, or how to treat it differently than regular green onions.

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