Guinness is considered by its many aficionados to be extremely creamy, but when you add it to Champagne or prosecco, its fruitiness emerges as well. The proportions are roughly two parts bubbly to one part Guinness, but you can mix it to taste. It's a bit of a novelty drink, but, like Irish Coffee, it's found all over Ireland. Black Velvet is a terrific party drink. It's Irish, you can mix it to order as guests arrive, it's delicious—and it stretches your Champagne farther!