Pork stuffing: I used up a bit over half of the gyoza stuffing left over from making the teba gyoza.
Shiitake mushroom: I found these large fresh mushrooms in our near-by gourmet grocery store a few days ago and bought them thinking I would make some kind of stuffed and baked dish. I washed and removed the stem and squeezed out the extra moisture. I put a small amount of olive oil in the cap (which was promptly absorbed) and simply stuffed the caps with the gyoza mixture (left upper in the image blow).
I baked them in a 400F toaster oven for 30 minutes (right upper and left lower in the image above). Some juice, which was nicely seasoned, came out. I cut the stuffed mushrooms in half showing the bottom shiitake and top gyoza stuffing (right lower in the above image).
I served this with some of the juice accumulated in the bottom of the baking dish and a side of Sriracha hot sauce. The shiitake mushrooms gave a nice meaty texture which soaked up the meat juice. This is a very satisfying dish.
(A few days later we made a meal by combining several of these left over stuffed mushrooms with the barbecued gyoza chicken wings--it was a mighty fine combination).
Although this will go with any drinks, we were having this with an interesting Sonoma red blend called "The Barrister 2010". They equate this to Orin-Swift "The prisoner", which we rather liked (I am not sure the "Barrister" was so named because they were comparing this wine to the "Prisoner" and indicating "barrister" is better than "prisoner"???). This is a red made of many varietals but the kitchen sink. Although I could not find what kinds of grapes were in it, we definitely tasted and smelled black pepper indicating a good amount of syrah component. This is a good food wine and great with the this dish.