From left, Von Humbolt's Natur wasser, named after the German explorer and naturalist; Blood & Sand, inspired by silent movie star Rudolph Valentino; and a single malt by Macallan in collaboration with artist Steven Klein. Courtesy of Tamworth Distilling, Samuel Adams and The Macallan hide caption

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Courtesy of Tamworth Distilling, Samuel Adams and The Macallan

Sunn O)))'s Greg Anderson (center) mugs with brewers from Right Proper, Stone and Pen Druid to make "Soused," a beer inspired by the drone-metal band's collaboration with Scott Walker. Clarissa Villondo /Karlin Villondo Photography hide caption

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Clarissa Villondo /Karlin Villondo Photography

Craft breweries now account for 5,234 of 5,301 U.S. beer makers, according to an industry group's annual tally. Here, Danielle Coons, the tasting room ambassador at D.L. Geary Brewing Co. serves a beer in Portland, Maine, last November. Brianna Soukup/Portland Press Herald via Getty Images hide caption

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Brianna Soukup/Portland Press Herald via Getty Images

Ignacio Nicolas Campillo, director of a hops production facility in northern Spain, peels apart the flower of the hops plant, to reveal yellow powder inside. The powder is used to make beer. Lauren Frayer/NPR hide caption

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Lauren Frayer/NPR

No Bitterness Here: Craft Beer Boom Boosts Spain's Hops Growers

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AJS made these cone-headed taps for Stevens Point Brewery in Wisconsin. Courtesy of Olivia Locascio Film and Photo hide caption

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Courtesy of Olivia Locascio Film and Photo

Arts And Craft Beers: Brewers Draw Drinkers' Eyes With Snazzy Tap Handles

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A beer flight from New District Brewing Co. Courtesy of New District Brewing Co. hide caption

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Courtesy of New District Brewing Co.

Amid Craft Brewery Boom, Some Worry About A Bubble — But Most Just Fear Foam

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Brewers from Draught Works and the Denver Beer Co. collaborate on making a huckleberry sour beer last weekend at the Draught Works brewery in Missoula, Mont. The beer was kettle soured before being added to the fermentation tank seen here. Courtesy of Draught Works hide caption

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Courtesy of Draught Works

Central Michigan University has announced a new certificate program in "fermentation science," and James Holton's company, Mountain Town Station Brewing Co., will help give CMU students hands-on brewing experience. Steve Jessmore/Central Michigan University via AP hide caption

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Steve Jessmore/Central Michigan University via AP

Aspiring Craft Brewers Hit The Books To Pick Up Science Chops

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Brewers pay a federal tax on each barrel of beer they produce. Two proposals on Capitol Hill would lower that tax for small brewers, but not everyone's on board. Steve Helber/AP hide caption

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Steve Helber/AP

A Craft Beer Tax Battle Is Brewing On Capitol Hill

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Clean Water Services held a brewing competition in Sept. 2014, inviting 13 homebrewers to make beer from its purified wastewater (as well as water from other sources). Now the company is asking the state for permission for brewers to use its wastewater product exclusively to make beer. /Courtesy of Clean Water Services hide caption

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/Courtesy of Clean Water Services

Allagash Brewing microbiologist and head of quality control Zach Bodah's favorite microscope picture of Brettanomyces (taken in house). The culture comes from Confluence Ale and is a blend of the Allagash house yeast and Brett yeast. Courtesy of Zach Bodah/Allagash hide caption

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Courtesy of Zach Bodah/Allagash

With so many craft breweries now in operation, just about every beer name you can imagine is taken. That's making it harder for newcomers to name that brew without risking a legal fight. Leif Parsons for NPR hide caption

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Leif Parsons for NPR