48 HOURS: Tokyo street eats with Shake Shack's Randy Garutti

FILE PHOTO: Shake Shack CEO Randy Garutti speaks during an interview with CNBC on the floor of the New York Stock Exchange January 14, 2016. REUTERS/Brendan McDermid/File Photo

TORONTO (Reuters) - Randy Garutti knows street food: He has been Shake Shack's chief executive officer since its inception as a hot dog cart in New York’s Madison Square Park.

But when Garutti visits Tokyo, which boasts seven of the country's 13 Shake Shack locations, he makes sure to sample all aspects of traditional Japanese cuisine.