Gothamist posted photos of the most expensive hot dog in the world from Serendipity in New York. The $69 beef hot dog is grilled in white truffle oil, as is its pretzel bread bun. Also "topped with medallions of duck foie gras with black truffles, caramelized Vidalia onions, heirloom tomato ketchup and, of course, mustard (Dijon, with black truffles)." It looks totally gross. [Gothamist]
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