Kohlrabi is an uncommon but versatile vegetable that looks a bit like it's from out of space!  There are green and purple skinned varieties, but the flesh is white.  It is a member of the cabbage family, with a crisp texture and nutty, sweet flavour.  You can roast, sauté, or simply peel and cut into slices and steam, then serve with a dab of butter and top with snipped herbs.  It is also excellent raw, grated into a coldslaw or used as crudité with your favourite dip.