Support WBURBrewers Gone Wild: Taming Unpredictable Yeast For Flavorful BeerAndrea SheaJanuary 23, 2015 ShareThis is Allagash's coolship — an open, spontaneous fermentation tank with wort rushing in. When the Maine breeze passes over the liquid, wild yeast in the air around the brewery will begin to ferment the wort to make beer. (Courtesy of Allagash)
