Put bones in a 6 quart stock pot.
Add the vinegar and water and let sit for 1 hour so the minerals can leach from the bones.
Make sure the bones are completely submerged in the water. If not, add more.
Add the vegetables and bring to a boil.
Scrape off any scum that forms on top.
Reduce to a simmer, cover and cook 24-72 hours.
At the end, toss in the parsley.
Let it cool and strain.
Enjoy in soups or for sipping on its own.