It’s not an obvious veggie to throw in your shopping cart, but fennel is a great source of fiber and is loaded with vitamin C and potassium. Look for fennel with short, tight, overlapping celery-like stalks and feathery leaves. The bulb should be large, tightly compact and bright. Fennel has an anise or licorice flavor that becomes mild when it is cooked. Fennel can be braised, grilled, roasted, steamed or served raw.