Only In New York: $69 Hot Dog

NEW YORK ―  It's a dog to die for.

On the Upper East Side, Serendipity 3 unveiled the world's most expensive hot dog. The 12-inch frank, called the Serendipity footlong haute dog, sells for $69.

And what do you get for that kind of cash?

"It's placed in a pretzel bun that is buttered with white truffle butter and then it's topped with medallion of duck fois gras with black truffles," said chef Joe Calderone.

And you don't just put regular ketchup or mustard on this dog. Condiments include black truffle dijon mustard, caramelized vidalia onions and heirloom tomato ketchup.