Mustard is the shit, but no condiment can fuck with fresh ground horseradish. Not that weak shit they sell at the grocery store either, I get my shit from Srodek's in Hamtramck and it's freshly ground from horseradish root. That shit will blow your wig back. The only thing comparable is real wasabi.
This shit will open any blocked sinuses you have.
Horseradish for the Gefilte Fish Part 3 Videos | Food How to's and ideas | Martha Stewart
And don't forget that in Passover we prepere it from the blood of christian kids - much better