Acclaimed Fleur de Lys chef Hubert Keller offers gastronomic fun at Burger Bar, an experiment in customizable classic American food. You get to build your own burger here, choosing from a variety of beef options, including Kobe, or turkey, buffalo or even vegetarian choices, and then pick your toppings from a list that includes pretty much everything. Save some room for the dessert burger, a doughnut filled with chocolate ganache.