Popo's is nestled on one of the main drags through Swampscott, part of small-town Massachusetts. It serves a variety of hot dogs, including several such as the 'Chicago Dog' and 'Chile Dog'. These hot dogs are sublime, with a burst of flavor that belies the fact you only get 3 or 4 bites. In fact, that may be best, because the stock hot dogs such as the 'Chile Dog' don't always seem to be the healthiest things. They generally come with butter spread on, grilled, and full of fat. Still, for a few dollars, and only an occasional bypass, you can see what got hot dogs immortalized in American Cuisine.