The hotdog thread reminded me of this. I know we have some diabetics here so you might want to try it, if you like honey mustard.
A packet of Splenda
I use olive oil, Walmart's Grey Poupon, sometimes apple cider vinegar, sometimes balsamic, and Splenda depending on the kind of vinegar. I also add garlic, salt and pepper. A pinch of brown sugar was good in it once.
She says it is good as a marinade on chicken or fish before grilling but I have never tried it (nobody here likes marinades).
You can play around with it all you want. Sometimes I use less vinegar and more mustard. Other times I use more vinegar and a little mustard. Some times more oil. I got the recipe from a friend and hers tastes nothing like mine.