In article ,
says...

I ordered one this evening and honestly? There?s no frills to it. It?s a big 1/2 lb double burger with bacon, some kind of gooie cheese stuff, with some ketchup and a pickle is n a standard generic toasted bun. Kind of flavorless.

Not worth the hype. I can make better at home.

And no, it doesn?t look near like this...

https://photos.prnewswire.com/prnfull/20160805/396024

I order mine without the mayonnaise. Mayonnaise doesn't belong on a
burger. Mayonnaise is ok on a turkey or chicken sammich.