I was given some gunpowder mustard for Xmas which I was hoping would blow my head off but sadly, whilst it is nicer that colemans, isn't hitting the spot.
so, I left both colman's and the gunpowder on the side all morning to see what happens - made with very little water and 3 heaped tea spoons of mustard
colman's is still very meh
the gunpowder gives the nasal hit (like wasabi) but then falls away