
Skim off any large pockets of foam that form on the surface. (If you’re too nervous to ignite it, just cook brandy down for 1 minute.) Once the flame dies down, add reserved marinade, bring to a boil, and reduce halfway (to 1 1/2 cups), about 12 minutes. Remove from heat, push vegetables to one side of pot, pour brandy into empty side, and ignite with a match. Stir in garlic and tomato paste and cook for 1 minute, then stir in flour and cook for another minute.Cook until vegetables are lightly browned, about 8 minutes, stirring up any brown bits from the pot, and adjusting heat if necessary to prevent burning. Add diced onion, carrot, half the mushrooms and the remaining 1/4 teaspoon salt to pot.(Add oil if the pot looks a little dry.) Transfer chicken to a plate as it browns.

Working in batches if necessary, add chicken in a single layer and cook until well browned, 3 to 5 minutes per side. Heat lardon fat over medium heat until it’s just about to smoke. Pat chicken pieces with paper towels until very dry.

Cover and refrigerate for at least 2 hours or, even better, overnight. In a large bowl, combine chicken, wine, bay leaf and thyme. Season chicken with 2 1/4 teaspoons salt and 1/2 teaspoon pepper.
