DIRECTIONS
In a very large stockpot (at least 6 gallons), heat the coconut oil over medium heat.
Add the roasted onions and garlic, sautéing for 15 to 20 minutes until deeply fragrant and caramelized.
Add the chicken backbones, tomato paste, tomato pulp, salt, pepper, water, and any optional herbs to the pot.
Stir well to combine.
Bring the mixture to a gentle boil, then immediately reduce the heat to the lowest possible setting.
Let the broth simmer, uncovered or partially covered, for 2 to 3 days. The longer it simmers, the more concentrated and nutrient-rich it will become.
Carefully strain the broth through a fine-mesh sieve or cheesecloth into another large pot or heat-safe containers.
Discard the solids.
Allow the broth to cool completely. Skim any fat that solidifies on the surface, if desired. Portion the finished broth (approximately 5 gallons) into freezer-safe containers or bags for long-term storage.
Don't let the broth come to a rolling boil during the long simmer. A very gentle, 'lazy' bubble is all you need to prevent it from becoming cloudy.