Cannelli beans slow cooked in a glass flask (often a Chianti bottle shorn of its straw), with water, olive oil, garlic and sage. Traditionally the flask is placed in the embers or placed in a bread oven after the bread has been baked, and ready the next morning.
Today bakers who use wood-burning ovens still make it—but in a glazed terracotta pot (coccio) instead of bottles.
Image by Grande Terra Toscana