On a normal day, thirsty revelers easily drain two kegs of Guinness at Boston’s Black Rose tavern. Come St. Patrick’s Day — an official holiday in Bean Town — and they’ll plow thorough 55 kegs. "It’s pretty crazy over there," says Keenan Langlois, corporate chef for The Black Rose and the seven other restaurants in Boston’s Glynn Hospitality Group.
Guinness, it's not just for drinking