"The Massachusetts “super beef” or “three-way” sandwich combines tender shavings of medium-rare roast beef with barbecue sauce, mayonnaise, and American cheese, all contained — barely — within a Kaiser roll. The messy, gratifying specialty and its subtle variations grace menus throughout the state, including those of Boston experts like Cusser’s Roast Beef and Seafood, but a road trip north of Boston demonstrates why this is properly known as a North Shore-style sandwich." - Stasia Brewczynski