Cut the meat into cubes and fry in the oil. Are added chopped onion and stir. Mushrooms cut into larger pieces and put in the meat and onions. Everything is seasoned with pepper and leave to cook on low heat. When the meat is tender, pour the wine and allow the liquid to evaporate by half, but remain little sauce, put the feta cheese, cut into pieces (the feta cheese can be a cow) and grated cheese and leave to melt, stirring continuously. Finally, add a few sprays of fresh mint and add salt as needed. Serve as a side dish in place 1-2 tablespoons of yogurt, which is poured on a little sunflower oil, which is lightly fried little red pepper.