Place meat, leek, celeriac, carrots, bay leaf, cloves, pepper and wine in a large bowl. Marinate for at least 24 hours, longer is better up to 5 days. Strain the marinade and reserve. Remove cloves and bay leaf, discard. Saute meat and vegetables in oil until well browned. Sprinkle on flour and add mushrooms. Saute for 10 minutes. Add reserved marinade and enough water to cover the meat. Simmer for 1 hour and serve.