Garlic scapes are the young stem of the immature garlic bulb. As the bulb grows it sends out a curved stem, which straightens out and gets tougher as the garlic itself matures. While the scapes were once passed over, they're now showing up in farmers' markets everywhere. Garlic scapes taste something like a cross between garlic and scallions--mildly assertive but not overpowering. The combination of mint and peas is classic, and just a touch of fresh lavender peaks the flavor. Peas are definitely a labor of love, as for each pound of peas in the pod you get about 1 cup shelled. And yes, they are worth it! Get the kids to help you shell the peas, but if that doesn't work, pick up a package of frozen peas and use them instead (no need to thaw first).