How to make broth in a clay based slow cooker like the Vita-Clay.
Place the chicken carcasses and optional chicken feet in the clay pot.
Add the chopped vegetables and add enough filtered water to cover (about 4 quarts).
Stir in apple cider vinegar and secure the cover.
Cook on "low" or "soup" for 6 hours.
Check pot and top up with additional filtered water if needed. Cook on "low" or "soup" for an additional 6 hours.
Strain bones and vegetables.
Cool on the counter and refrigerate for 8 hours or overnight. Skim off chicken fat and reserve in a small glass container for cooking.
Freeze broth you will not use in a week. Use as a base for soups and sauces.