Nothing special TBH, just ice cream chilled with Liquid N2 but that's the selling point I suppose. It didn't taste very special but wasn't bad. It was somewhat fun to watch and have some liquid nitrogen drop and bounce off your hand when they drizzle it over your ice cream.
I'd be concerned for my safety though, they are dumping quite a bit of nitrogen in that small room. Should install a oxygen sensor so the staff and customers don't suffocate!