Cut 50 g butter into small pieces and place in the freezer. Peel shallots, garlic and 3 carrots. Wash the carrots. Coarsely dice shallots, garlic and carrots. Clean, wash and also roughly dice the celery
Heat 1 tablespoon of oil in a saucepan. Roast the prepared vegetables for 4-5 minutes while turning them brown. Stir in tomato paste, roast briefly, season with salt. Deglaze with red wine, vinegar, 100 ml water and stock, add 2 tsp. ground pepper, bring to the boil, cover and simmer for about 1 hour
Peel, wash and chop the potatoes. Cook in boiling salted water for about 20 minutes. Peel and wash the rest of the carrots and cut them into slices. Peel onions, cut 1 into fine cubes, 2 into rings. Knead minced meat, diced onions, mustard, breadcrumbs, milk and egg. Season with salt and pepper. Dust onion rings with flour
Form 8 meatballs from the minced meat mass and wrap each with 1 slice of bacon. Heat 2 tablespoons of oil in a frying pan. Fry the meatballs for 8-10 minutes, turning them over, remove them and keep them warm. Knock off onion rings, put them into hot frying fat and fry them for 3-4 minutes, turning them, season with salt and pepper.
Pour sauce through a sieve into another pot, bring to the boil and reduce to about 500 ml, season with salt, pepper and sugar. Wash the thyme, shake dry, add to the sauce and cook
Heat 2 tablespoons of oil in a frying pan. Steam the carrot slices for 4-6 minutes until al dente, season with salt, pepper and a little sugar and keep warm. Drain the potatoes and let them evaporate briefly. Add milk and 25 g butter, mash everything to puree. Season to taste with salt and nutmeg
Take the sauce off the stove, remove the thyme. Stir in the frozen butter bit by bit with a whisk. Arrange everything on plates, sprinkle sauce with pepper