Serves: 10 to 12 litres1) In a large stockpot, combine the onions, carrots, and celery. Toss in the parsley, thyme, and bay leaf and add the chicken parts or bones. Add enough cold water to cover the chicken by 7cm. Bring to a boil over medium heat, lower the heat immediately so the stock simmers very gently. Skim the surface of any foam, scum, or fat, with a ladle, as often as necessary. Simmer, uncovered for 4 hours.