STOCK: In a large stock pot, add water, ham bone, beef marrow bones, and beef shank and bring to a simmer. While waiting for boil, make a bouquet garni of dill, parsley, peppercorns, and bay leaves in a cheese cloth sachet; peel and coarsely chop parsnip, 1 carrot, celery, and 1 onion quartered. Before adding to stock, skim off foam that rises to the surface. When foam subsides, add chopped veggies and bouquet garni, cover and gently simmer for about 3 hours.