Everyone is a beer connoisseur these days, and there seems to be a new brewery appearing in everyone's neighborhood each day. With the market for beer growing rapidly, it's important to understand which beers were responsible for influencing this expansion. To get to the bottom of this, First We Feast enlisted a collection of brewers, distributors, journalists, publicans and importers to determine the 20 most influential beers of all time.

[via First We Feast]