What started as a trickle has become a torrent.
In 2002, the number of small breweries canning beer stood at one. Now, according to the Web site www.craftcans.com, that number has swelled to 290.
Lost Rhino Brewing in Ashburn, Va., rushed out 12-ounce cans of two of its beers - Rhino Chasers Pils and Face Plant IPA - in time for Memorial Day cookouts. Heavy Seas Beer in Baltimore plans this month to ship two canned brands: Loose Cannon, its American-style IPA, and Davy Jones Lager, an amber lager in the Anchor Steam mold. Devil's Backbone Brewing in Lexington, Va., was prepping for a second canning run of its Striped Bass Pale Ale this month. And DC Brau has doubled the number of canned offerings, with Penn Quarter Porter, On the Wings of Armageddon (a super-hoppy imperial IPA) and summer seasonal El Hefe Speaks (a Bavarian-style wheat beer) joining its three pale ales.
But the banner headline might be the conversion of the industry's leading naysayer.
Jim Koch, chairman of Boston Beer, once had little regard for beer in aluminum cylinders. When he purchased a Cincinnati brewery in 1994, he got rid of the canning line. In 2005, he circulated a Beer Drinker's Bill of Rights that stated in part: "Beer shall be offered in bottles, not cans, so that no brew is jeopardized with the taste of metal."
Fast forward to 2013: The first 12-packs of Samuel Adams Boston Lager and Samuel Adams Summer Ale cans are stacked in supermarkets. Samuel Adams Oktoberfest will join them later this year.
"What changed is the quality of the can lining," explained Koch of his about-face. "Beer used to pick up a solvent-like character from the solvent-based linings. Now they use water-based linings."
What's more, "the new linings are more flexible," he contends, less likely to tear and allow the beer to come into contact with metal. "They've proven out, but I wanted to make sure. They crossed a threshold two years ago."
Nevertheless, Koch says he has spent the past two years and about $1 million designing a better beer can. At first glance, it looks identical to the standard model, but closer examination reveals a wider lid and an opening positioned farther from the edge. The design, says Koch, forces you to open your mouth wider, letting in more air, which enhances the beer's aroma and flavor.
"It makes a slight but noticeable difference," he maintains.