A waiter carries beers at the Theresienwiese fair grounds of the Oktoberfest beer festival in Munich, southern Germany, last September. For centuries, a German law has stipulated that beer can only be made from four ingredients. But as Germany embraces craft beer, some believe the law impedes good brewing. Karl-Josef Hildenbrand/AFP/Getty Images hide caption

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Germany's Beer Purity Law Is 500 Years Old. Is It Past Its Sell-By Date?

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A German law from 1516 says beer should only include three ingredients: hops, barley and water. Now brewers are lobbying to have the law be recognized by UNESCO. Dan Love/Flickr hide caption

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Is A 500-Year-Old German Beer Law Heritage Worth Honoring?

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