Peel onions and garlic. Chop onions coarsely, chop garlic. Clean, wash and cut the peppers into strips. Heat the oil in a frying pan or casserole and fry the goulash in 2 portions. Remove the meat. Fry onions, pepper strips and garlic in hot frying fat. Add meat again, stir in tomato paste and season with salt, pepper and paprika.
Deglaze with red wine and stock, add bay leaf and bring to the boil. Cover and braise over medium heat for 1-1 1/2 hours. Stir flour with about 6 tablespoons of cold water until smooth. Stir into the finished goulash and simmer for another 2-3 minutes. Season the goulash with salt and pepper and refine with a dash of crème fraîche as desired. Serve with noodles or boiled potatoes