i don't think you know very much about mustard.
False.
but my confusion is in how you try to classify yellow mustard as mustard and everything else as "a sauce."
wtf is a "sauce" in your mind and how are real mustards somehow different from yellow mustard?
Brown mustard is Indian mustard, dijon is french. I prefer good old strong english mustard. Which is yellow, but not any old yellow mustard on the shelf.
