The day before we made this sandwich, Wendie cooked an amazing pork tenderloin based on an Alton Brown recipe. It is perhaps the best tenderloin I’ve ever had. Having also recently visited a Chinese grocery store, we had a few king mushrooms in our refrigerator, so we thought they would go brilliantly with the pork. We chose the pecorino romano cheese to add a little saltiness, the vinaigrette dressing to make it a bit more moist. And so, one thing led to another, and we ended up with this fantastic sandwich. It’s messy to eat, but it really brings out the best in the leftover pork. Enjoy.