Chinese Broccoli, or Choi Sum is a Chinese cabbage. The entire plant can be eaten, including the tender stalks and flowers. The flavor is reminiscent of a sweet, juicy broccoli. These are just delicious. All they need is a light stir fry or steam, and maybe a dash of vinegar to finish them. It’s an excellent source of vitamins A and C, calcium, potassium, and dietary fiber.