21) Which of the following items is NOT served at Shake Shack?
22) How many Shake Shacks are currently in operation?
23) What type of beef does Shake Shack use for its burgers?
24) What is the name of the popular media platform Shake Shack uses to communicate with its customers?
25) How many locations does Shake Shack have in the United States?
26) What type of cheese does Shake Shack use for its burgers?
27) What type of bun does Shake Shack use for its burgers?