Kohlrabi is a type cabbage turnip mostly popular in Germany and initially grown there. That’s why many markets call it German turnip as well. It is the same species as cabbage, broccoli, cauliflower, kale, Brussels sprouts, collard greens, Savoy cabbage, and gai lan.
These turnips could be eaten both raw and cooked. All the parts of the plant including the stem and the leafs could be used to make at least some dishes. They are grown in Texas and in a few other states across the US.