Bright green leaves and flower buds resembling broccoli, though they never quite form a head the way broccoli does. Broccoli raab is actually not a broccoli at all, but rather closely related to the turnip. It's a vegetable with zesty, slightly bitter, almost mustard-like flavor that is popular in Italian and Asian dishes. Delicious stir fried, sauteed, broiled, or steamed. Broccoli raab is another super nutritious green, containing vitamins A, B, C, K, iron, magnesium, calcium, zinc, and omega 3 fatty acid.