Kåldolmar—Swedish cabbage rolls from the Ottoman empire

Name: Kåldolmar—Swedish cabbage rolls from the Ottoman empire
Ingredients: 1 cabbage head—white or savoy; 300 gr (10 oz) minced meat—preferably a mix of beef and pork; 0,5 yellow onion; 2,5 dl (1 cup) boiled rice; 1,5 tsp salt; A good pinch of black pepper; Possibly 1 dl milk; Frying butter or oil; Oven water or stock; Sauce concentrated meat stock, cream or milk, potato starch or corn starch, soy sauce, pepper; Serving boiled potato, lingonberry jam, sauce