This is the meal that Max makes for Lorelai when she spends the evening at his apartment. It is a traditional Italian dish, originating from Milan, and consists of veal shanks braised with vegetables, white wine, and broth. Its name translates as “bone with a hole”, referring to the marrow hole in the centre of the shank.
Max learned the recipe from a former girlfriend, possibly one of Italian heritage. For some reason he is shy about telling Lorelai this, even though he already told her about a serious relationship he had two episodes back.