Make this on last Christmas, quite like it thus make it again for I can't wait for Christmas. ingredients are simple, cut all (carrot, celery, sausage, onion, garlic, mushroom) in cube except for potato. Mix all together and add some salt and pepper.
rub chicken with lemon juice, so do the cavity. then sprinkling black pepper, salt, rosemary, do not forget the cavity too. after that, stuff the chicken cavity with those ingredients (carrot, celery, sausage, onion, garlic, mushroom). Cover and refrigerate overnight. after marinate, rub the chicken all over the outside with butter. Then, cover up with aluminium foil.
bake it in the oven for 45 hour at 200 degree Celsius. Remove the aluminium, put potato at side and roast. Spoon the broth over the chicken during roasting period. Properly will need about 1 and half cups of stock. half cup at the beginning and remaining for every 20 minutes. The chicken is cooked when a fork can go in to the bone
source: Joe Famularo. Christmas Capon with Condiment from Cremona, pg 33. Taste of Italia, holiday 2004.