Remove the pork neck or shoulder from the bone and cut the meat into bite-sized but not too small pieces. Peel and quarter the onions.
Place the meat alternately with the onions on a wooden or metal skewer. Season the skewers with salt, pepper, paprika and curry powder.
Heat the fat in a pan, fry the skewers on both sides. Add the tomato ketchup and marjoram and about 400 ml of water. Bring to the boil briefly and cover and simmer for approx. 1 1/2 hours over a low flame. Possibly add a little more water. Take the skewers out of the sauce, thicken them with sauce thickener and season with Tabasco and the aforementioned spices. Serve the skewers in the sauce.