The founder of Shake Shack says there's a limit to how many times you should say 'yes' to the customer

The founder of Shake Shack says there's a limit to how many times you should say 'yes' to the customer

Sonia Moskowitz/Getty Images, Han Myung-Gu/WireImage

Shake Shack's founder, Danny Meyer, believes too much customization might spoil the broth.

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