Potato Gratin

Directions

1. 1
   Preheat the oven to 250 and butter a 13-by-9-inch baking dish.
2. 2
   In a large pot, combine the potatoes and cream and season with salt and pepper.
3. 3
   Bring to a boil, then press a round of parchment or wax paper on the potatoes.
4. 4
   Simmer over moderately low heat until the potatoes are tender, 15 to 20 minutes.
5. 5
   Using a slotted spoon, transfer the potatoes to the baking dish in layers.
6. 6
   Season the potatoes with salt and pepper as you go.
7. 7
   Return the pot with the cream to high heat and boil, stirring constantly, until the cream is reduced to 2 1/2 cups, 6 to 7 minutes.
8. 8
   Pour the cream over the potatoes while shaking the baking dish.
9. 9
   Bake the gratin for 1 1/2 hours, or until golden on top.
10. 10
    Blot any excess fat and let stand 15 minutes before cutting.