The menu of a Shake Shack restaurant is seen in the Manhattan borough of New York August 15, 2014. Shake Shack, the fast-food restaurant chain famous for its hamburgers and milkshakes, is preparing to... more 
The menu of a Shake Shack restaurant is seen in the Manhattan borough of New York August 15, 2014. Shake Shack, the fast-food restaurant chain famous for its hamburgers and milkshakes, is preparing to go public, seeking to tap stock market demand for popular casual dining companies, according to people familiar with the matter. To match Exclusive SHAKESHACK-IPO/ REUTERS/Carlo Allegri (UNITED STATES - Tags: BUSINESS FOOD) less 
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Reuters | Photo By CARLO ALLEGRI / REUTERS
Fri, Aug 15, 2014 6:27 PM EDT