I don't know. I was expecting more from their burger. They are supposed to be a competitor for In-N-Out in the burger department and well I don't think Shake Shack's burgers are better. They are yummy, but they cost more than In-N-Out and don't taste better. I do however, like their custard shakes. However, their shakes didn't taste overwhelmingly better than other custard shakes I've had. I still recommend people to try it and the food is good. It just didn't meet what I was expecting. Also, don't let the long lines fool you. They have fast service! My rating is more of a 3.5/5.