Weyerbacher Brewing Company is a brewery in Easton, Pennsylvania, United States, founded in 1995 by Dan and Sue Weirback. The brewery is well known for its "huge taste" beers. Most of their brews are high in alcohol, with QUAD clocking in at 11.8% alcohol by volume, and a one-off 10th anniversary ale called Decadence brewed to 13% alcohol by volume. Hops Infusion is one of the bitterest examples of the IPA style. Weyerbacher is also a pioneer of aging beer in wooden barrels previously used for aging bourbon. This process was used to transform Old Heathen into Heresy, Blithering Idiot into Insanity, Merry Monks into Prophecy, and QUAD into Blasphemy. These four styles (imperial stout, barleywine, trippel, and quadrupel) are all very high-alcohol brews with complex flavor profiles; the barrel-aging lends additional oak and whiskey flavors.