I had complete forgot about this little treat until visiting my mom this weekend, she makes this everyone once in awhile as a dipping sauce for steamed asparagus. It's really simple and you will already have the ingredients on hand.
1 tsp. mustard
1 1/2 TBSP. Soy sauce
These measurements make enough for one, so multiple it times as many people as you are serving. Then, measure, pour, and mix. Serve it with steamed or boiled asparagus.