Its average store revenue of US $4 million is more than twice that of McDonald 's average store revenue within the United States .
Since its opening , Shake Shack has grown to be the largest part of the USHG 's portfolio .
Shake Shack 's average store revenue of US $4 million is more than twice that of McDonald 's average store revenue within the United States .
Since its opening , Shake Shack has grown to be the largest part of the USHG 's portfolio .