Cut the smoked pork loin into strips. Halve the peppers, clean and cut into pieces. Wash chives, shake dry and cut into small rolls. Heat oil in a pan. Sauté the meat and pepper pieces in it for 3-4 minutes.
Season to taste with salt, pepper and paprika and place in a small casserole dish. Grate cheese and sprinkle over the Kasseler-Mix. Bake in a preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 5 minutes.
Meanwhile boil 1 litre of water and about 1 teaspoon of salt. Remove water from the stove and stir in the puree powder. Add butter and chives and season to taste with a little nutmeg. Serve the puree with the gratinated pork loin.