3 pounds waxy potatoes, peeled (red or Yukon gold are great)
1 large garlic clove, halved
1 Tb butter, softened
1/4 tsp ground nutmeg
1 cup finely grated Gruyere cheese (or cheddar works great)
1 cup heavy cream
1/2 cup milk
salt and freshly ground black pepper
1. Cut the potatoes into 1/4 inch thick slices. Put them into a large pot and fill with cold water and a little salt. Bring to a boil on high heat. Reduce the heat and simmer for 2 minutes. Do not overcook at this stage or the potatoes will begin to break break up. Drain well.
2. Rub the inside of the baking dish (mine was approx 12 inch circle) with the cut garlic and grease with a little of the butter.
3. Preheat oven to 325. Put half the potatoes into the dish, spreading them evenly. Sprinkle with a little of the nutmeg and some seasoning of salt and pepper. Add half the cheese and then another layer of potatoes, nutmeg and salt and pepper.
4. Beat together the cream and milk and pour evenly over the potatoes. Finish by scattering the remaining cheese on top with a few small pieces of butter dotted over the surface.
5. Bake in the middle of the oven for 40-45 minutes until a deep crisp brown crust forms. Serve immediately from the dish.