Place all of the ingredients in a large stock pot and add enough water to cover the chicken by at least 2 inches. I used 5 quarts for my (I believe) 12-quart stock pot. Bring water to a boil then turn down heat and simmer, partially covered, for 1 hour 20 minutes, or until chicken is cooked through.
Shred chicken and divide between bowls. Strain stock over the chicken.