A comforting meal that makes a change from the usual sausage and mash. The balsamic vinegar and wine sauce gives the sausages a delicious sweet aftertaste.
Preheat the oven to 190°C/375°F/gas mark 5. Cook the truffle potatoes in their skins in a pan of boiling salted water until tender, then drain, refresh under cold water and peel them while warm. Cut them in half lengthways and set aside.