In a tall pot, add 1 1/2 gallons of water, all the vegetables and chicken. bring to a boil and quickly lower to a simmer. If using a whole chicken, let simmer for 2 hours. Remove chicken and return all bones, and carcass to the pot, continue to simmer and additional 2 hours. If using parts, remove after 1- 1 1/2 hours and return bones to the pot. Strain, cool and refrigerate or freeze.