Yes, it is the same Shake Shack that originally started at Madison Square Park in NYC. The MSP location even got a webcam so you can see how long the line is in the summer (sometimes over an hour!). A lot of people in the area (lower Fairfield County) were extremely excited about it opening in Westport, I think more than Tarry Lodge. Me on the other hand had my reservations. Having grew up in Southern California I'm naturally bias to IN-N-OUT. I tried my hardest to have an open mind. We got there around 7 PM and the line was almost out the door. I was impressed by how fast the line went.
Here is our order: 2 Shake Burgers ($4.75 each and doesn't even have bacon), 1 large root beer ($3.40), french fries ($2.75) and a strawberry shake (tiny cup for $5). The total with tax came to $21.97.
So was it worth the $$?? ABSOLUTELY NOT!! The burgers were small and tasted average. French fries taste like the average fast food crinkle cut fries and the shake was ok. IN-N-OUT totally blow Shake Shack out of the water. Heck, even Duchess' is better. I really do not understand what all the hype is all about. I will go back again but not for the burger; for the frozen custard since by the time I was done with the burger the line got way too long (out the door on the deck).