When the members of the Kaneb family acquired the Brigham's ice cream brand in 2008, they were banking on the popular recipes for a premium dessert that they enjoyed. Perhaps more importantly, they were also banking on nostalgia. Brigham's has remained one of Boston's beloved institutions under the Kanebs' HP Hood dairy company, even as its presence has diminished significantly with the demise of the restaurant chain that bore its name. To that end, Lynnfield-based Hood is celebrating the…