Ingredients

  • Butter for pan
  • 1 cup Guinness stout
  • 10 tablespoons (1 stick plus 2 tablespoons) unsalted butter
  • 3/4 cup unsweetened cocoa
  • 2 cups superfine sugar
  • 3/4 cup sour cream
  • 2 large eggs
  • 1 tablespoon vanilla extract
  • 2 cups all-purpose flour
  • 2 1/2 teaspoons baking soda
  • 1 1/4 cups confectioners' sugar
  • 8 ounces cream cheese at room temperature
  • 1/2 cup heavy cream

Method

  • For the cake: heat oven to 350 degrees.
  • Butter a 9-inch springform pan and line with parchment paper.
  • In a large saucepan, combine Guinness and butter.
  • Place over medium-low heat until butter melts, then remove from heat.
  • Add cocoa and superfine sugar, and whisk to blend.
  • In a small bowl, combine sour cream, eggs and vanilla; mix well.
  • Add to Guinness mixture.
  • Add flour and baking soda, and whisk again until smooth.
  • Pour into buttered pan, and bake until risen and firm, 45 minutes to one hour.
  • Place pan on a wire rack and cool completely in pan.
  • For the topping: Using a food processor or by hand, mix confectioners' sugar to break up lumps.
  • Add cream cheese and blend until smooth.
  • Add heavy cream, and mix until smooth and spreadable.
  • Remove cake from pan and place on a platter or cake stand.
  • Ice top of cake only, so that it resembles a frothy pint of Guinness.