Périgord is as famous for its walnut trees as it is for its black truffles. In this rich tart, a substantial, buttery crust cradles a chewy, candylike caramel filling bursting with deep, nuanced flavor.
Duck fat, which is something of a well-kept (and wildly delicious) secret on this side of the Atlantic, is a common pantry staple in the Dordogne. Here, it enhances the earthy flavor of skillet-fried potatoes and gives them a gorgeous silkiness and golden-crisp edges. Showered with garlic and parsley, this is the type of rustic French side dish that everyone loves.
