Slice, julienne or grate it into your salad or slaw for a great crunch and a fresh but slightly spicy flavor. It also can be cooked — boiled, steamed, sauteed, roasted or fried. More often than not, however, I use it raw for its appealing mild flavor and pronounced crispness.
Although the bulb of the plant is the most frequently prepared and eaten portion, the leaves are also entirely edible. Chiffonade them finely and toss them in a vinaigrette, or give them a rough chop and either steam or sauté them, as you would collard greens or kale.