Greenhouses sprouted at Dexter Beer Grotto for outdoor dining crowd Updated Feb 11, 2021; Posted Feb 11, 2021 Dexter Beer Grotto has several greenhouses, an outdoor patio, and is located right next to one of the 'social districts' that the city has put up around town.MLive.com Facebook Share DEXTER, MI - Adaptation, change, transformation can describe what every restaurant in Michigan has had to do over the last year. Dexter Beer Grotto in Dexter is no exception, and they’ve been rolling with the punches. “Metamorphosis is a good word,” said Phil Blass, general manager at the Grotto. He’s been an employee since the Grotto first opened in 2014. “We’ve gotten to show what we are made of, and not just to ourselves, but to our customers and our community.”