It seems that even on the Shake Shack’s first day of winter operation, not many have decided to risk frostbite by ordering a Concrete. (Danny: Better put disclaimers on those cups, fast.) From noon till 1:30 p.m., we didn’t see more than a couple of people in line at a time when we periodically checked in with the Shake Cam. So, yes, a measure of sanity sometimes prevails in matters Shack — which’ll make it easy for us to snag a frozen custard on our way to buy a winter jacket and some hats and gloves at H&M.