Wash the potatoes thoroughly and cook covered for about 25 minutes
Wash the parsley and chop finely. Stir in all but a little bit of the yoghurt. Season to taste with salt and pepper
If necessary, wash the escalopes and pat them dry. Peel onion. Cut both into strips and olives into thin slices
Heat the oil in a coated pan. Fry the meat for about 2 minutes while turning it. Fry the onion and olives briefly. Season everything with gyros spice salt and pepper
Drain potato, cut lengthwise and press apart. Serve with yoghurt, shredded meat and ketchup. Sprinkle with remaining parsley
If you want to save fat, you should always prepare your gyros yourself. There you know that only lean meat and spices, but no additional oil was used