Despite its appearance, kohlrabi does not actually come from outer space. Kohlrabi is German for "cabbage turnip," which is essentially what this Brassica family member is. It comes from Europe, as do most members of the cabbage family. Rarely tasted by most Americans, its popularity has been quite steady on the other side of the pond since the 15th century. And it's easy to see why: the flesh is crisp and refreshing and redolent of sweet cabbage, and when chopped and roasted it softens, like an apple, with a flavor and texture that is out of this world. Seeing (and tasting) is believing.