Recent quotes:

IBUs

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.

Hoppy beer is awful—or at least, its bitterness is ruining craft beer’s reputation.

In 1980, when most of the nation’s beers were produced by Anheuser-Busch, Miller, Schlitz, Pabst, and Coors, Sierra Nevada’s pale ale was a revelation. Sierra Nevada founder Ken Grossman added way more hops than most brewers at the time would ever consider using. But he used a recently discovered American variety called the Cascade, a hop whose big, bitter bite was counterbalanced by a sweet grapefruit scent and a spicy aftertaste. Sierra Nevada Pale Ale is a beautiful beer with an aggressive edge, and it’s the beer that put me, and so many others, on the path to craft beer enthusiasm.