Place bones in a large stockpot or slow cooker.
Add chopped vegetables, apple cider vinegar, and garlic if using.
Pour in water until everything is fully covered.
Bring to a boil, then reduce to a gentle simmer.
Let simmer for 12–24 hours (the longer, the richer the collagen). Skim off foam occasionally.
Once done, strain the broth through a fine mesh sieve.
Allow to cool, then store in jars. When refrigerated, it will develop a jelly-like texture—that’s the collagen.
Serving and Storage Tips
