If you want another variation of this same cake, but with a touch of chocolate to it - there's two similar recipes.
1 cup of Guinness Draught Beer
1/2 cup + 2 tbps of butter
1/2 cup of cocoa powder (I recommend using Hersey's baking chocolate, or Baker's chocolate powder)
2 cups of sugar (the finer, the better - you can always shift it if you want)
3/4 cup of sour cream
2 eggs
1 tsp of vanilla extract (if you don't want to spend an arm for pure extract, imitation is just fine)
2 cups of all-purpose flour
2 1/2 tsp of baking soda
Frosting Ingredients
8 ounces of cream cheese
1 1/4 cup of powdered sugar
1/2 cup of heavy cream (or double cream if you're in Europe)
Instructions
Preheat oven to 350