Also called German turnip or turnip cabbage, is a biennial vegetable, a low, hardy cultivar of wild cabbage. It is a cultivar of the same species as cabbage, broccoli, cauliflower, kale, Brussels sprouts, collard greens, Savoy cabbage and gai lan. It can be eaten raw or cooked. Edible preparations are made with both the stem and the leaves. Despite its common names, it is not the same species as the turnip, although both belong to the genus Brassica.