Told their spelling of "Kohlrabi" was the worst in history, the Renners laughed. Kohlrabi (Brassica oleracea) is an easy-to-grow member of the cabbage family. One good way to prepare it is to trim off the root ends and smaller stems and cut the bulb into quarter-inch cubes for boiling, steaming, baking, or frying. The flavor is turnip-like and said to be delicious. Young Kohlrabi is also tasty raw and can also be sliced and marinated, or added to salads.