<Tr> <Th> Products </Th> <Td> Hamburgers Hot dogs French fries Milkshakes Custards Beer Wine </Td> </Tr> <Tr> <Th> Website </Th> <Td> shakeshack.com </Td> </Tr> <P> Shake Shack (NYSE: SHAK) is an American fast casual restaurant chain based in New York City . It started out as a food cart inside Madison Square Park in 2004, and its popularity steadily grew . It eventually moved to a stand within the park, expanding its menu from New York - style hotdogs to one with hamburgers, hotdogs, fries and its namesake milkshakes . The company says it uses all - natural 100% Angus beef only and says that its meat has no hormones nor antibiotics . </P> <P> Since its founding it has been one of the fastest - growing food chains eventually becoming a public company filing for an initial public offering of stock in late 2014 . The offering priced on January 29, 2015; the initial price of its shares was at $21 immediately rising by 123% to $47 on their first day of trading . </P>

Where did the name shake shack come from