Place the bones in a large pot or slow cooker. You can use a mix of different bones, including joints and marrow bones, for maximum nutritional benefit.

Pour enough water to cover the bones and add the apple cider vinegar. The Vinegar helps extract nutrients from the bones.

Bring the mixture to a boil, then reduce to a simmer. For a slow cooker, set it on low. Allow the broth to simmer for 24-48 hours for maximum nutrient extraction.

In the last few hours of cooking, you can add vegetables like carrots, celery, and Parsley for added nutrients and flavor.

Once cooked, strain the broth to remove bones and vegetables. Allow it to cool. The broth will likely gel due to the high gelatin content, a sign of a nutrient-rich broth.

Serve the broth alone or mix it with your dog’s regular food. It can be stored in the refrigerator for up to 5 days or frozen in ice cube trays for extended storage.