A Scottish brewery has made the world's strongest beer: a 41% brew called Sink the Bismarck.

The BrewDog brewery made headlines last year when it unveiled a 32% beer called Tactical Nuclear Penguin. It set the world's record for most potent beer until Schorschbrau, a German brewer, released their 40% strength Schorschbock.

Sink the Bismarck was created to wrest that record back.

Some anti-drinking groups have expressed outrage, but BrewDog's managing director James Watt defends his drink. "It is important that you be careful with this beer and show it the same amount of skeptical, tentative respect you would show an international chess superstar, clown or gypsy," he says.