Here is a wonderful French gratin of thin slices of potato smothered with melted cheese. Be sure to use a shallow earthenware pan or cazuela so that the potatoes will cook and brown evenly.
Preheat the oven to 375°F. Butter a 10- or 12-inch baking-serving dish.
Peel the potatoes and cut them into paper-thin (1mm) slices. Rinse the slices in cold water; shake dry. Arrange the potato slices in overlapping rows and cover the dish with foil or a