Ingredients

  • 1 13 cups flour
  • Pinch of salt
  • 3 1/2 ounces unsalted butter, chilled and cubed
  • 2 to 4 tablespoons ice water
  • 2 1/4 pounds small porcini, cepes, boletes, or Italian brown mushrooms
  • 1 large egg
  • 2 ounces finely diced prosciutto, preferably imported from Switzerland
  • 23 cup walnut meats
  • 1 13 packed cups cubed dried bread, soaked for 10 minutes in 1/3 cup milk or water and squeezed dry
  • 1 large shallot, chopped and softened in 1 teaspoon butter
  • 1 cup heavy cream, chilled
  • 2 tablespoons unsalted butter, melted
  • 1 clove garlic, crushed
  • Freshly ground pepper
  • 1 to 2 tablespoons French walnut oil
  • 8 4- or 4 1/2-inch-wide tartlet molds or flan rings

Method

  • Make the pastry one day in advance by placing the flour and pinch of salt in the work bowl of a food processor fitted with the metal blade.
  • Sift by turning on and off once.
  • Scatter the butter over the flour.
  • Turn machine four or five times, or until the mixture resembles coarse oatmeal.
  • Sprinkle with two and one-half tablespoons of ice water and turn the machine on and off twice.
  • Dump onto a work surface covered with a sheet of waxed paper.
  • The dough should not be too crumbly; if it is, sprinkle with droplets of cold water - just enough to mass the dough together; don't let it get at all damp.
  • Wrap tightly and chill overnight.
  • Place the dough between sheets of waxed paper or plastic wrap and roll out to make a large rectangle.
  • Lift off the top sheet and fold the pastry dough into thirds.
  • Turn the dough one-quarter and repeat rolling and folding once.
  • Chill the dough for 20 minutes, then cut into eight equal-sized pieces.
  • Roll out each portion to a paper-thin round and fit into mold or flan ring.
  • Keep chilled until ready to bake.
  • Repeat with remaining pieces of dough.
  • Trim cepes' stems and wipe caps with a damp paper towel.
  • Blanch for five minutes in salted boiling water; drain and press dry between paper toweling.
  • Place the egg, prosciutto, bread, walnuts and shallots in the work bowl of a food processor fitted with metal blade and grind to a smooth paste, scraping down the insides of the work bowl from time to time.
  • Scrape into a wide soup bowl, cover and refrigerate for three-quarters of an hour.
  • Using a dinner fork, gradually work in small amounts of the cold cream into the walnut mixture.
  • Each portion of cream must be blended in before the next is added.
  • Season to taste with salt and pepper.
  • Preheat the oven to 400 degrees.
  • Spread an even, thin layer of the walnut mixture on the dough.
  • Cut the cepes vertically into very thin slices; fan the slices slightly and place on top of the cream.
  • Brush the surface with a little melted butter mixed with crushed garlic, salt and pepper.
  • Bake on the middle oven shelf for 30 minutes.
  • If using tartlet molds, cool on a wire rack for five minutes before turning out.
  • Sprinkle the mushrooms with a few drops of walnut oil.
  • Serve with a strong sweet chilled wine, such as Sherry.