Caldo de tuétano

Put the marrowbone in a tall pan with half of the water and bring to boil. Once boiling remove all the foam from the top.

Add all the veggies and the rest of the water and bring back to boil.

Let it simmer for at least 6 hours (up to 24) adding more water if necessary.

Remove all the bones and vegetables and strain the broth.

Let it cool and store in the fridge or freezer.