The globe-trotting foodie Anthony Bourdain filmed a segment of his popular “No Reservations” series at Dorchester’s own Greenhills Bakery last Friday morning. Bourdain and a companion settled in for more than two hours at one of the eatery’s cozy tables and chowed down on a signature Irish Breakfast sandwich. Cindy Quinn, who co-owns the landmark bakery with her husband Dermot, said that Bourdain and his friend had been sampling some of the city’s, ahem, spirit purveyors the night before and needed a hearty breakfast to recover. Photo courtesy Bill Brett