In the battle for light beer domination, Anheuser-Busch has laid down the gauntlet with Select 55. With only 55 calories, the company bills the golden lager as the lightest beer in the world. The 2.4% ABV makes it more of a session beer, while the taste is also on the light side; it almost resembles seltzer with a splash of hops. If you're looking to kick back with a longneck while still avoiding a beer belly, your search ends here.