Book excerpt: The story of Boston is inextricably linked to food, hence its nickname "Beantown." Given the city's geography, its cuisine is understandably tied to the sea, with popular dishes such as lobster, oysters and clam chowder. These are still served today at classic restaurants like Union Oyster House, Parker's Restaurant and Legal Sea Foods. There are also neighborhood favorites such as Cantina Italiana in the North End and Sullivan's in Southie. In addition to Boston proper, the surrounding areas have their own specialties, including fried clams, the world's best roast beef sandwich and bar pizza. From famous spots like Cheers to new classics like Anna's Taqueria and the Summer Shack, join local author Zachary Lamothe as he explores the best food in Beantown.