Put everything into a large pot and bring to a boil. Reduce heat and simmer for two hours. Turn off heat, let cool for at least an hour, and then place in the refrigerator overnight.
Remove from refrigerator and skim off congealed fats. Pour through a fine strainer and return stock to refrigerator for an hour so the remaining sediments settle.
Remove stock from refrigerator and slowly pour into another vessel taking care to not disturb sediment.
Take these from the strainer. Remove bone fragments off of them, but otherwise do not rinse.
Place in blender and puree. Refrigerate or freeze for later use.
Fats: Use in other recipes in place of oils. Make soap.
Sediments: Add to compost, garden, or yard. Dry and use for Terra Preta.
Leftover Strained Items: Add to compost. Dry and use for Terra Preta.