* Transfer the ground chicken, chicken legs, onion, carrot, celery, bay leaves, peppercorns, fennel, coriander, and partsley to a large Dutch oven or stockpot and add cold water to just cover the ingredients, about 2 quarts. Add the hydrated gelatin and water and bring to a boil over high heat. adjust the heat to maintain a brisk simmer, then skim off any foam and scum from the surface and discard. Cook for 45 minutes, adding water as necessary to keep the ingredients submerged. Remove from the heat and allow to cool for a few minutes.