From the Essential Pépin tv series, Episode 101: Savory Staples
Literally translated, paillasson means “doormat.” Raw potatoes are shredded, pressed into a nonstick pan, and cooked to create a compact cake that is excellent with any kind of roast or on its own with a salad. The dish, also called pommes Darphin, after the chef who created it, is similar to what the Swiss call rösti potatoes.
If you are reluctant to attempt flipping the compacted potato cake over in the skillet with a spatula, loosen it (it should be a solid mass) around the edges and underneath, cover the pan with a flat lid or plate and, holding the lid in place, invert the pan. Then slide the potato cake, crusty side up, back into the skillet to cook on the other side.—Jacques Pépin
Serves 4
3 baking (Idaho) potatoes (about 8 ounces each)
2 tablespoons corn oil
1 tablespoon unsalted butter
4 scallions, trimmed (leaving some green) and minced (1/2 cup)
1/2 teaspoon salt
1/4 teaspoon freshly ground black pepper