The earliest known French potato dish is pommes de terre dauphinoises, which originated in Switzerland in 1600. I tasted this divine dish of scalloped potato, cheese, and milk, a specialty of the region near Annecy, at the home of Ruth Moos (see page 3), who made it as an evening dairy meal served with a salad and vegetables. Instead of covering the potatoes and the cheese with the traditional beef bouillon or broth, Ruth makes it kosher style using only cream or milk.
Cooks' Note
You can cook this dish in advance, but if you do, cook for only 30 minutes and reheat until the liquid is dissolved and the top is golden.
