Garlic scapes are the "flower stalks" of hardneck garlic plants, although they do not produce flowers. These stalks start to appear a month or so after the first leaves. Raw garlic scapes are crunchy like green beans or asparagus. However, you can eat scapes raw or cooked, whole or chopped.
Selection and storage
Garlic scapes keep well in a plastic bag in the fridge for two to three weeks. They will keep for a few days (and will look beautiful) in a glass with a little cool water in it, on the counter in a cool room. Change water daily.
Preparation and serving methods
Trim and discard the stringy tip of the scape, then cut crosswise, either into tiny coins or string bean-like stalks.
White Bean and Garlic Scapes Dip from the New York Times