This is a great quick mid week dinner. I always have shrimp on hand in the freezer and this is just a nice change from the typical fried or sauteed shrimp. I prefer to use bok choy vs napa cabbage, but either one will work. Shitaki mushrooms also are best, but button mushrooms will work just fine. I serve this with some crisp romaine, and a sesame dressing (Kraft makes an Asian Toasted Sesame Dressing, which is actually very good). I add some cucumbers, red onion and carrot to the romaine, and top with the dressing for a simple side salad. This makes a light summer dinner. Fresh shrimp is best, but frozen shrimp is fine for this dish.