If there is only one restaurant that I am to recommend for lunch in New York, Del Posto would be it. Del Posto is Mario Batali's most superb expression of his love and passion for good Italian cuisine and fine dining. Located on the western edge of the meat packing district, Del Posto is a bit out of the way, but well worth the effort to pursue as it offers an upscale, elegant and memorable dining experience. If you're free during the weekdays, you can enjoy Del Posto a fraction of the price when a generous $29 pre-fixe lunch is offered. It is a deal not to be missed by both visitors and Mahattanites alike.
85 10th Avenue
Other New York restaurants that I recommend:
Eleven Madison Park