Business Insider -
10 Jun 2015 23:42

Shake Shack started out as a hot dog cart in New York City's Madison Square Park. Three years into serving hot dogs, restaurateur and Shake Shack founder Danny Meyer came up with an idea to turn the cart into a permanent burger stand, and he sketched the plan onto the back of a napkin. That sketch laid the blueprint for Shake Shack's original location in Madison Square Park. Ten years later, the burger chain is now a billion-dollar business with more than 60 locations across the US. Here's the n...
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