Peel, wash and roughly dice the potatoes and celery and boil them in boiling salted water for about 25 minutes until soft. Peel and chop the ginger. Chop plums. Wash apples, grate dry, cut into quarters, cut out the core. Finely dice the fruit flesh, mix with lemon juice, ginger and plums. Wash the flesh, dab dry. Cut a pocket into it and season with salt and pepper. Add 1-2 tablespoons of apple mixture each. Fix with wooden skewers
Heat the oil in a coated pan. Turn the chicken fillets in flour, tap them a little bit and fry them in the pan for 2-3 minutes on both sides until brown. Place the meat on a baking tray and cook in a preheated oven (electric range: 175 °C/ convection oven: 150 °C/ gas: level 2) for 8-10 minutes. Heat up the roasting set again, steam the remaining apple mixture for 1-2 minutes, remove. Deglaze with wine, stock and apple juice, add 2 tbsp. butter, simmer for 2-3 minutes. Stir in sauce thickener, season with salt and pepper. Add the apple mixture, add more
Wash the chives and cut into small rolls. Drain potatoes and celery, return to the pot with milk and 2 tbsp. butter, mash to puree. Season puree with salt, pepper and a little nutmeg, stir in chives