This spring I decided to sow some Pac Choi seeds I forgot I bought a few years ago from Kitazawa seed company. While not a traditional or native Italian brassica, I was still pretty happy with the end results, as it was a fast grower and gives you plenty of heads up before it bolts. I think this is a great broccoli or cabbage substitute as it was fairly pest free and grew very quickly (45 days)
One method of cooking it is simply grilling it. Another way we prepare it is to break it down into individual leaves, boil them in salted water for 3-4 minutes. Drain and cool in an ice bath. Once cooled you can freeze the leaves in ziploc bags for later use or simply sautee them with garlic and olive oil.