Wash and clean unpeeled potatoes. Prick with a fork, and place in any available oven (or wrap in foil on coals) until cooked through. When cooked, halve, and scoop out the inside. Mash with some mustard, cheese and salt, put back to the heat until the cheese melts. Top with sauerkraut.
Travels to Whanganui, Manawatu.