Americorp Real Estate
Brokers Associate, e-PRO
You could also try http://www.opentable.com in addition to the other sites listed below. Enjoy- that's a great area for restaurants in the city.
Broker Associate, Keller Williams Realty Chicago Consulting Group
716 E. 47th St. Chicago, IL 60653
(773) 418-0640 (cell) (312) 577-0985 (fax)
Per Christopher's response, there are a ton of restaurants near 600 N. Dearborn. Besides the restaurants that Christopher mentioned there is, The Melting Pot, Chicago Chop House, The Rainforest Cafe, Eggsperience, and a whole lot more! Is there a certain quinine you are inquiring about? I pride myself on knowing all of the restaurants in that area because I live just a few blocks away. Let me know if I can be of any further assistance.
That spot can't be beat for restaurants, though. It's a great location.