I first enjoyed this recipe at my mother-in-law's home in Cologne, Germany. Germany has a very large population of Italians and so it is very common to eat Italian-inspired dished there. This one combines pork tenderloin with tomato sauce, fresh tomato slices and melted mozarella cheese. A true knockout. I think this recipe originally came from a German woman's magazine. Though this recipes sounds very complicated, it is quite easy and fun to make. It is also a definite crowd-pleaser.