Plover, WI - United States of AmericaO'so Brewing Company was founded in 2007 by Marc and Katina Buttera. Marc was an avid home brewer and started O'so after opening a home brewing store known as Point Brew Supply. In 2013, O'so was declared the second fastest growing brewery in the state. In fall 2015, O'so won his first gold medal at the Great American Beer Festival Award for The Big O.
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