Mix red wine and tomato paste for the marinade. Season with salt and pepper. Leave the chops to marinate for 6-12 hours. Peel onions and cut into rings. Cut tomatoes crosswise, put them briefly in boiling water, then quench, skin, cut into eighths and remove the seeds.
Dice the tomato flesh. Drain the mushrooms on a sieve. Wash parsley, chop except for one bunch to garnish. Remove the chops from the marinade, dab dry. Fry in hot oil for about 12 minutes.
Remove and keep warm. Sauté onions in frying fat, add mushrooms. Season with salt and pepper. Add cream. Season with some marinade. Stir in diced tomatoes and chopped parsley.
Arrange vegetables and chops garnished with parsley bouquet.