Hoppy beer is awful—or at least, its bitterness is ruining craft beer’s reputation. - Slate Magazine: From a consumer’s standpoint, though, beers overloaded with hops are a pointless gimmick. That’s because we can’t even taste hops’ nuances above a certain point. Hoppiness is measured in IBUs (International Bitterness Units), which indicate the concentration of isomerized alpha acid—the compound that makes hops taste bitter. Most beer judges agree that even with an experienced palate, most human beings can’t detect any differences above 60 IBUs. Sierra Nevada Pale Ale, one of the hoppiest beers of its time, clocks in at 37 IBUs. Some of today's India pale ales, like Lagunitas’ Hop Stoopid, measure around 100 IBUs. Russian River’s Pliny the Younger, one of the most sought-after beers in the world, has three times as many hops as the brewery’s standard IPA; the hops are added on eight separate occasions during the brewing process.
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