Stop in for a cup of coffee

So here’s the latest question, while I’m planning on bringing a cooler, is there any must have food/concession item at Carlisle? You know, Indy has the Ribeye sandwich, Martinsville has the Famous Hot Dogs... etc
IMO Keep it to foods that you know, and less chance of side trips.
You're on a tight schedule as it is.
Try everything and go back for what you like best again the next day. LOL
They do have lots of good food, but couldn't say if there is a 'must have'