For good flavour and nutrition, a beef marrow bone is a great addition to this bone broth. Make up the rest with chicken carcasses from roasts or lamb bones, which are also good for a rich flavour.
Pour into the casserole dish. Stir in the plain flour, the remaining marinade mixture and beef stock into the casserole dish. Bring to the boil, cover and place in the oven for 3-3½ hours or ...