Garlic scapes are the seed stalk of the garlic plant which shows up in late spring. Scapes have a fresh garlic flavor and can be used for garlic in just about any dish until the real thing comes along.
A favorite way to eat them is to toss with olive oil, salt and pepper and grill over the b-b-q much like you would asparagus. The texture and flavor is similar to asparagus. It makes a great side dish.