Mustard is a very different way to go, but on salmon it can be a tasty side sauce. Mix together one part yellow table mustard, one part whole grain mustard, and one part dijon mustard. Add more dijon if you want it a touch sweeter. It is surprisingly good with salmon.
You are very right on the mustard. The Double Muskie "plum sauce" served with their coconut salmon is basically grey poupon and grape jelly. and it does not suck.
