Possible Clues:

• Hangover cure, so they say
• Sounds like the main cure!
• Hangover cure? Go for this, almost, with head spinning
• Hangover remedy in which one continues drinking
• Purported hangover cure
• Fabled curative which may be plucked from lab?
• Do high tea for suffering drunk's relief
• Colloquial hangover remedy
• '...that bit one': dubious hangover remedy
• Alcoholic drink taken for a hangover