- STEP 1
Boil the potatoes in salted water until tender, about 15 mins. Drain, replace the lid on the pan, then shake to break the potatoes up a bit. Add the beans, cream, butter and 2 tbsp truffle oil, then mash together well. Season liberally with salt, pepper and a good pinch of grated nutmeg, and drizzle with the remaining truffle oil.