You can use any cut of pork you desire. I like pork shoulder because it has more flavor. This cooks slowly and does not require a lot of attention,it's easy to make, and even better if you prepare this a day ahead, the flavors really intensify, just rewarm over low heat. Because of the soy sauce, add the salt in at the end of cooking. If possible make this with only green onions. Serve this with rice, this is a wonderful pork dish!