Wash the potatoes and cook in plenty of boiling water for about 15 minutes. Clean the savoy cabbage, cut into strips from the stalk, wash. Peel onion and cut into strips. Quench the potatoes, drain and peel the skin.
Place in a greased casserole dish. Sprinkle with 2 tablespoons of oil, season with salt and pepper. Sprinkle parmesan on the potatoes. Keep warm. Heat the fat, fry the onion for about 5 minutes while turning, after 3 minutes add the savoy cabbage.
Add cream and milk, bring to the boil and simmer for about 8 minutes. Season to taste with salt, pepper and nutmeg. Bake the potatoes in a preheated oven (electric cooker: 175 °C/ convection oven: 150 °C/ gas: level 2) for approx. 10 minutes.
Wash the rosemary and shake dry. Peel and halve the garlic. Wash the meat and dab dry. Heat 2 tablespoons of oil in a pan. Fry the meat on each side for about 4 minutes. Season with salt and pepper.
Add garlic and rosemary. Remove the meat from the pan. Pour broth into the pan, loosen the frying set, bring to the boil and reduce by about half. Arrange savoy cabbage, potatoes and meat on plates.
Drizzle meat with roast stock and garnish with rosemary and garlic.