Place all ingredients in a large stock pot. (I put everything in my extra-large roasting pan that I roasted the turkey in, with the carcass still in it, so the ends of the pan were positioned over the two burners on one side of my stove.) Bring mixture to a boil. Reduce temperature, cover pot, and simmer 1 1/2 hours. Stir occasionally (I stir about once every 1/2 hour or so).