To make bone broth, you will need one leftover turkey carcass (chicken, turkey, or wild game will also work) per gallon of water in a large pot, Instant Pot, Slow Cooker or Roaster pan.
To the stock pot with the turkey bones and water; add apple cider vinegar, vegetable scraps (such as onion peels or whole onions, carrots either whole or chopped, celery stalks) and seasonings. I like to use garlic seasoning, onion powder, salt, black peppercorns, bay leaves and thyme.
If you are making broth on the stove top, slow cooker or electric roaster bring the broth to a simmer and continue to cook slowly at around 200 degrees for 12-48 hours.
The next day, or once you have simmered your broth around 200 degrees for 12-48 hours, strain broth into storage containers using a fine-mesh sieve or strainer and allow to cool. Discard leftover turkey bones and save leftover meat in a freezer bag for another meal. No bite of Thanksgiving turkey goes to waste using this method.
Once cooled, the fat will rise to the top. Discard the fat or remove and store in the fridge for cooking later. Store broth in the fridge for 3-4 days, or prepare for long term storage.