Cut the meat into approx. 3 cm cubes. Sear portions in the heated fat. Briefly fry the onions cut into thin rings, deglaze with stock, add salt and spices. Let cook for about 45 minutes. (Or fry in a roasting pan and then place the roasting pan in the oven at 180 degrees for about 1 hour).
Cut the washed and pitted apples into 1/2 cm thick wedges, add to the goulash and cook for another 5 - 7 minutes.
Mix the starch with a little water and use it to thicken the sauce. Finally stir in sour cream or creme fraiche, do not let it boil anymore. Sprinkle with fresh marjoram if desired.