2Combine the cream, milk, garlic, salt, pepper & nutmeg and whisk thoroughly.
3Peel the potatoes and thinly slice them using a sharp knife or mandolin.
4Butter an 8 x 6½ inch ovenproof dish. Arrange the potato slices in the dish, adding cream between the layers and some cheese in the middle layer. Press down to submerge the potatoes in the cream.
5Bake in a bain marie in the oven for 2-3 hours until the potatoes are tender and the top is browned.