Well I think Triblin really earned to win! I have no idea why I guessed frozen lemonade. I did not want to pick the "boring" rice krispy treat (which btw will feature in our TR as well!).
I agree on the mustard and cream cheese (which I both like but not with a pretzel), but since I must be the resident pretzel expert here (anyone who every played the Kimmunicator game "The Pretzel Predicament" knows that Germany is the home to the pretzel - musical or not) I must say that there is one thing that goes with a pretzel: butter!!

See here for detailed instrcutions:
http://www.butterbreze.de/kurs1.html
The pretzel can also be eaten as an accompaniment to any sausage, preferably so called "White Sausages":