Clean, quarter and wash the savoy cabbage and cut into strips. Peel and chop the onion. Cut the smoked pork loin into cubes. Heat the oil in a large pan and fry the smoked pork in it. Add oregano, onion and savoy cabbage, fry briefly.
Season with salt and pepper. Add 5 tablespoons of water and cook covered for about 5 minutes. Melt the fat, sprinkle flour over it and sauté while stirring. Gradually add milk and 300 ml water.
Bring to the boil, stir in broth, simmer for about 5 minutes. Season to taste with salt, pepper and nutmeg. In a greased casserole dish (approx. 2 litres capacity), layer béchamel sauce, savoy cabbage mixture and lasagne sheets one after the other.
Depending on the height of the mould, repeat the process 2-3 times. Finish with savoy cabbage mixture and sauce. Sprinkle with cheese. Bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 35-45 minutes.
Garnish with oregano.