Roast the bones: Place bones on a baking tray and roast at 180°C (350°F) for 30 minutes to enhance flavor.
Soak with vinegar: Transfer bones to a large stockpot (9 qt recommended). Add 1.3 gallons of water and vinegar. Let rest for 30 minutes before heating.
Prepare vegetables: Peel and chop the vegetables. Add them to the pot along with garlic, spices, and salt.
Bring to a boil: Heat until it starts boiling, then skim any foam that appears.
Simmer slowly: Reduce heat to very low, ensuring a gentle simmer. Cook for at least 12 hours, ideally 16–18 hours. You can use a slow cooker pot.
Cool and store: Allow to cool, strain the broth, and store in glass containers. Refrigerate overnight and remove the solidified fat the next day.
Optional concentration: Reduce the broth further to obtain a concentrated gelatin, perfect for freezing in ice cube trays and using later.
Notes
Practical Uses in the Kitchen:
Drink it warm as a consommé.
Use as a base for soups, stews, and purees.
Freeze in small portions to flavor sauces or meat dishes.
Add to legume stews for extra nutrition and depth of flavor.