How cool is this - the cocktail version of a root beer float. A heaping scoop of vanilla ice cream topped with your favorite Irish stout (in this case Guinness). The ice cream works as a sweetener to the rich beer, resulting in a delicious, drinkable dessert.
Scoop ice cream into a pint glass, and pour in enough stout to fill it. One pint of ice cream and one 12-ounce bottle of beer will yield 2 servings.