Preheat the oven to 200 ° C (fan 175 ° C). Cut the peppers into thin strips as well as the mushrooms and wash clean. You may grate half or a quarter of them. Heat some oil in a large frying pan. Sauté cook the peppers and the mushrooms for about 3 minutes and then remove the pan from the stove completely. The meat portions need 5-6 minutes of cooking fat in the frying pan vigorously all around. Put the total meat, peppers and mushrooms back into the pan. Addd Metaxa and tomato paste and introduce boil. Stir in sour cream. Put the Gyros in a baking dish. Sprinkle with cheese and bake for about 10 minutes, until it looks golden brown.