Once widely mocked, US beer is now popular globally with hipsters and connoisseurs alike. Why is the world buying in to the American brewing revolution?

Not so very long ago, American beer was a joke. And a weak one at that.

To international tastebuds, it meant bottled lagers like Budweiser, Miller or Coors—commonly regarded by self-respecting drinkers as bland, corporate and lacking in credibility.

An explosion in independently-run microbreweries producing lovingly-created, strong, pungent, flavour-rich ales has transformed the reputation of the product.

But it is not only traditional aficionados of ale who have been won over by this American revolution.

Somehow, beer from the United States has become not just widely respected, but achingly fashionable.

Visit a chrome-surfaced bar in London, Stockholm or Amsterdam and you're likely to find Brooklyn Lager, Sierra Nevada Pale Ale or Odell's porter on tap.