Cabbage Pickle or Bread Kvass
by Zam
(France)
I heard that drinking pickle juice, especially cabbage pickle or bread kvass (fermented drink made of rye bread) can cure the hangover. If you want to know more about Kvass you can check it at this wikipedia link :
"http://en.wikipedia.org/wiki/Kvass"
Pickle juice has high percentage of electrolytes which you loose when your body is dehydrated.
Of course as you said it's better to prevent than cure it later. Therefore some say to eat cabbage containing salads before or during the feast. ;)