For the filling, peel 4 onions and dice them coarsely. Wash 4 apples, quarter them, remove seeds and dice them coarsely. Wash the mugwort and shake dry. Mix apples, onions, 3 sprigs of mugwort, approx. 1 tsp salt, some pepper and 1⁄2 tsp sugar.
Wash the goose thoroughly inside and outside, dab dry. Season inside and outside with salt and pepper. Add the filling to the goose. Close the opening with a wooden skewer and wrap it with kitchen string. Tie the legs together.
Tie wings together on the back as desired.
Preheat oven (electric cooker: 100 °C/circulating air: 75 °C/gas: see manufacturer). Peel 3 onions, cut into slices. Clean or peel and wash the soup vegetables. Cut vegetables into small pieces. Wash 2 apples, quarter and core them.
Mix everything with 2 sprigs of mugwort, salt and pepper and place in a fat pan or a large flat roasting pan. Place the goose on top. Fry in a hot oven for about 7 hours. Now and then prick the skin of the leg so that fat comes out.
Mix 100 ml water with 1 tablespoon salt. Remove goose with vegetables and apples from the oven; use vegetables with the roast stock for the sauce. Place the goose on a rack, put it in the oven and slide a fat pan underneath.
Switch up the oven (electric cooker: 175 °C/circulating air: 150 °C/gas: see manufacturer). Roast the goose for another 50-60 minutes, adding salt water every 15 minutes. Red cabbage and potato cookies are delicious with it.
For the sauce: Put the cooked vegetables, apples and roast stock through a sieve into a pot. Let it cool down a little.
Degrease the sauce with a ladle. Pour on the stock and 100 ml of water. Stir in jelly. Pour bay leaf, peppercorns and cloves into a disposable tea bag. Add to the sauce and simmer for about 10 minutes.
Remove tea bags. Stir starch with approx. 4 tbsp. water until smooth. Stir into the boiling sauce and simmer for about 2 minutes while stirring. Season to taste with salt and pepper.