1. Heat the olive oil in a casserole and brown the chicken for 5 to 10 minutes on medium-high heat.
2. Add the onion, shallot, carrots and garlic, and sprinkle with flour and cornflour. Mix well, and then pour over the Cognac. Set alight over high heat, rotating the pan in all directions. (Taking care when igniting the brandy).
3. Once the flames diminish, add the red wine, water, passata, thyme, parsley, bay leaf, salt and pepper. Cover and simmer over low heat for about 1 hour.
4. While chicken is cooking, fry the bacon in a hot pan until nicely browned, about 10 minutes. Drain and place on kitchen paper. Add to the chicken after 1 hour of cooking, along with the mushrooms. Simmer another 30 minutes, uncovered. Adjust seasoning and remove bay leaf before serving.