Looking for the ultimate burger experience? Then go to Fleur de Lys at Las Vegas’ Mandalay Bay. The FleurBurger 5000 is the creation of renowned chef Hubert Keller; it’s a Kobe burger topped with foie gras and black truffles, served on a brioche truffle bun and garnished with a special sauce (containing yet more truffles). It comes with a bottle of Chateau Pétrus 1990 in Ichendorf Brunello stemware (exclusively imported from Italy). You get to keep the glassware but then, at $5000 a time, so you should.