1) Peel and cut the potatoes into thin slices;
2) In a frying pan, grill all the blades (make it in waves) and book in a bowl.
3) Mix all the eggs with the parsley and add to the bowl with the potatoes; You don't need to stir much, just mix. Let it rest for 20 minutes (this will make the potatoes absorb the egg).
4) After resting, heat a high frying pan with a little oil - put half of the potatoes. Arrange the raw ham (chopped or sliced), put the Parmesan cheese and then put the rest of the potatoes and whatever is “liquid” in the bowl.
5) leave on medium heat for about 4 minutes or until it releases from the bottom. Carefully and with the help of a plate or other skillet, turn the tortilla over and let it cook on the other side for a few more minutes.
6) Remove from heat and let rest for 5 minutes before serving.