This is a rich stock, made from roasted beef bones, shanks and veal knuckles, that forms the basis of good sauces and soups with great depth of flavour.
Preheat oven to moderately hot (200°C/400°F) and brown bones in a roasting tray for 30 minutes. While bones are cooking, toss whole tomatoes with onion, carrot and a little oil in another roasting tray and roast until softened. Put bones into a large stockpot - there should be room to