Preheat oven to 425 degrees.
Place all vegetables on a roasting pan and roast for 15 minutes.
In a large stock pot, add the roasted vegetables, chicken feet/back fat, sea salt, optional herbs (using all or a mixture of the ones you prefer) and apple cider vinegar. Fill the pot to the top with filtered water, bring to a boil.
Reduce to a very low simmer, top with a lid and continue to simmer for 24 hours. Every six to eight hours, add more water to fill back up to the top of the pot.
After 24 hours of simmering, strain the bone broth into an airtight container (or several, if needed for storage space). Let it cool completely in the refrigerator without a lid.
Once completely cooled, top with the lid. Store in the refrigerator for up to two weeks or in the freezer for up to six months.