Ingredients

  • 1 1/2 cups whole milk
  • 3 extra-large egg yolks
  • 1/2 cup plus 1 tablespoon granulated sugar
  • 2 tablespoons plus 1 teaspoon cornstarch, sifted
  • 2 tablespoons unsalted butter, cut into small pieces
  • A pinch of kosher salt
  • 1 cup creme fraiche
  • 1 pint raspberries (2 baskets)
  • 1 tablespoon confectioners sugar

Method

  • In a medium heavy-bottomed pot, bring the milk to a boil, and then turn off the heat.
  • Whisk the egg yolks together in a medium bowl, and then whisk in 1/2 cup sugar and the cornstarch.
  • Continue whisking until the mixture thickens and is a pale yellow color.
  • Slowly whisk in the hot milk, at first a few tablespoons at a time, and then more quickly.
  • Return the mixture to the stove, and cook over medium heat, alternating between a whisk and a rubber spatula, until the pastry cream thickens to a puddinglike consistency.
  • Remove from the stove, and stir in the butter and salt.
  • Transfer the mixture to a bowl.
  • Place a piece of plastic wrap on the surface to keep it from forming a skin.
  • Poke a few holes in the plastic to let the heat escape.
  • Cool in the refrigerator.
  • When the custard has cooled, fold in the creme fraiche.
  • Preheat the broiler.
  • Toss the raspberries with 1 tablespoon granulated sugar, and scatter half of them on the bottom of a 9-by-9-inch (or equivalent) gratin dish.
  • Spoon the custard into the dish, and scatter the rest of the berries on top.
  • Sift the confectioners sugar over the top, and pass under the broiler for about 7 minutes, until bubbling and gratineed on top.
  • Serve the gratin at the table with a big serving spoon.