@Pippinwhite -- I agree. I love mustard, too. It's even good for an old-fashioned mustard poultice.
My favorite use for brown mustard is to get a spoonful when I have a cold. It will clear out your sinuses in a big hurry and make your nose run. I'd always rather use a natural remedy if I can, and spicy brown mustard is a good one.
Curry is another good solution for clearing out the old nasal passages. It usually doesn't take long, either. I've had a terrible cold, eaten curry, and then, for a few hours at least, was able to breathe.