I went to the stand that they had set up at the Christmas market and I really enjoyed it. The service was great, all of the staff were very friendly.
The only thing I did not like was the wait, approximately 40 min but at the same time I know that they have no control over this as the crowds come and go.
I had the graham cracker chimney with chocolate fudge sauce. It was really good and I would go back again if in the neighbourhood.