Ingredients

  • 3 1/4 cups milk (whole milk, please)
  • 1/2 cup sugar, plus
  • 2 teaspoons sugar (110 g total)
  • 3 slices fine lemon zest
  • 7 egg yolks
  • 1 egg
  • 1/4 teaspoon salt
  • 1/2 cup unbleached all-purpose flour (70 g)
  • 1 -2 tablespoon vanilla extract (or 1 1/2 t vanilla and 3 to 4 T rum)
  • 3 tablespoons unsalted butter (45 g)

Method

  • Slowly heat the milk, 2 t of the sugar, and the lemon zest in the top of a double boiler over simmering water.
  • Meanwhile, whisk the remaining sugar, egg yolks, egg, and salt until thick but still golden, 2 to 3 minute.
  • Sift the flour, a little at a time, whisking briskly to mix thoroughly.
  • Whisk 1/2 c of the boiling milk mixture, 2 T at a time, into the egg mixture; then pour the egg mixture into the remaining milk mixture (this is a technique known as tempering).
  • Cook over medium-high heat, until thickened, 2 to 3 minutes.
  • As it begins to reach a boil and look lumpy, whisk vigorously to smooth it.
  • When the cream is as thick as mayonnaise, reduce the heat and whisk or stir for another minute.
  • Remove from the heat and discard the lemon zest.
  • Beat in the vanilla and then the butter, 1 T at a time.
  • Cool the cream quickly by placing the pan in a bowl of cold water or by spreading the cream out on 2 baking sheets.
  • Smear a little butter on top and cover tightly with plastic wrap so cream doesn't get a skin.
  • Cool completely in refrigerator.
  • You may want to thin it with a couple of T of milk before using it.