8ounces300g cream cheese softened at room temperature
½cupheavy cream
Instructions
For the cake
Heat oven to 350 degrees and grease a 9-inch springform pan and line the bottom 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 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 icing sugar and 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. Do not ice cake until it is completely cook.