That sandwich sounds amazing! I love pretzel rolls, and gouda. And cranberry mustard is phenomenal. I did something similar a few weeks ago. I mixed some chunky cranberry sauce with some hot coarse brown mustard and put it on a turkey/havarti/lettuce sandwich. The tartness/sweetness of the cranberries with the slight heat and acidity of the mustard made a really fantastic blend. You have inspired me to work on that again.
Admin advisement: This is a continuation of this 1116 post thread. This post would have been number 1117, had it remained intact. (part II)