TOTAL TIME: 8-24 hrs
Place the bones in a stock pot. Pour water over the bones and add the vinegar. Let sit for 20-30 minutes in the cool water. The acid helps pull the nutrients out of the bones.
Chop and add the vegetables to the pot. Add any spices or herbs.
Bring the broth to a boil. Then reduce to a simmer and simmer until done, from 8 to 24 hours.
Remove from heat and let cool. Strain using a double fine metal strainer to remove all the bone and vegetable.