Call it the real whopper.

At his just-opened Las Vegas restaurant Fleur, chef Hubert Keller(PBS' "Secrets of a Chef," Bravo's "Top Chef Masters") has unveiled a $5,000 burger that takes the concept of beef and bun to the over-the-top heights one might associate only with Vegas.

Speakeasy has yet to sample this gourmet curiosity – dubbed the FleurBurger 5000 -- but we've gathered some details about it for our readers to, um, chew on. Here goes:

What makes it so pricey?Lots of expensive ingredients. Start with a Kobe beef "patty" (more like a mountain of ground primo cow flesh), then top it with foie gras and black truffles. Oh, and don't forget the "special sauce," which is made with – no surprise – more truffles.

Do fries come with it?Yes – at least judging from the photo the restaurant supplied us. But no word on the provenance of these spuds.