Osso buco means «bone with a hole» in Italian, referring to the marrow found at the centre of each cross-cut veal shank — considered by many the most delicious part of the dish. It originated in the city of Milan and remains a cornerstone of traditional Lombard cuisine.

The dish relies on slow cooking to transform a relatively tough cut into something meltingly tender, while the sauce thickens and deepens in flavour from tomato, white wine and vegetables. The authentic recipe is always finished with gremolata — a mixture of grated lemon zest, garlic and fresh parsley — added at the last moment to give the dish a bright, fresh lift that cuts through the richness of the sauce.