Rinse porcini mushrooms, soak in a good 1/2 l of lukewarm water. Dice bread. Wash and chop parsley. Clean, wash and chop the leek. Peel and chop 1 onion. Dice bacon, fry until crispy. Add 1 tablespoon butter. Fry onion and leek. Add marjoram and parsley, season. Mix in bread. Let rest for about 10 minutes.
Chop nuts. Wash the turkey, dab dry. Season inside with salt and pepper. Knead eggs and nuts into the bread mixture. Stuff the turkey with it. Close the opening. Tie the legs together. Place the turkey (breast up) on the fat pan
Peel the carrot. Chop the carrot and 2 onions. Arrange around the turkey. Spread the breast with 1 tablespoon of butter. Roast in a hot oven (electric cooker: 200 °C/ convection oven: 175 °C/gas: level 3) for 2 1/2-3 hours. As soon as the vegetables are lightly browned, gradually add the stock. Scoop turkey more often
Drain the porcini, collect the mushroom water. Pour half to the turkey. Clean the mushrooms, quarter them. Dice remaining onion
Brush turkey with cold, heavily salted water for the last 10 minutes. Fry until crispy over high heat. Sauté the mushrooms and porcini in 1 tbsp. hot butter. Brown onion and season. Deglaze with remaining mushroom water and cream, bring to the boil. Simmer the sauce for about 2 minutes
Keep the turkey warm. Sieve the stock, add to the mushroom sauce, bring to the boil. Mix starch with little water, thicken sauce, season to taste. Carve the turkey, cut the filling open. Arrange everything. Served with: Brussels sprouts and boiled potatoes