Bring the contents of the pot to a boil, then reduce the heat and let the broth simmer. The cooking time can vary from 10 hours to a day, depending on the desired richness of the broth.
During cooking, keep an eye on the water level and add more if necessary.
When the broth is ready, remove the pot from the heat and let it cool slightly. After that, strain the broth through a sieve or cheesecloth.