Enjoy an effervescent drink without the pesky mixer. Some of the cocktail recipes on the O2 website include a Jellybeantini, Caviartini and Sushitini. Yikes!
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.