An IPA made by Massachusetts-based Trillium Brewing Co., which has been making hazy IPAs for four years. Courtesy of Trillium Brewing Co. hide caption toggle caption Courtesy of Trillium Brewing Co. The Salt The 'Haze Craze': Beer Lovers' Newfound Obsession With Murky IPAs February 20, 2017 East Coast brewers have been making unfiltered, unpasteurized, hazy IPAs for about a decade. Their customers love the aromas and murky look of the beers. Now, the hazy beer craze has gone national.