Sarah Marshall considers hangover cures of old, from Frank M. Paulsen's 1961 study in The Journal of American Folklore:
Scanning through Paulsen's list—which contains, one hopes, more remedies than you will ever require—you’ll see that some entries are interesting purely for their content, others for the narrative that comes along with them, and still others interesting for the biographical information Paulsen was able to gather from his subjects—this alone suggesting a whole novel’s worth of narrative to anyone intrigued enough to conjure it. The best hangover cures are great not because they're effective but because they come from or lead into stories—stories of last night and other last nights, stories of who they came from, or how they came to be.
Examples:
"My dad used to have a hangover at least twice a week, usually on the weekend. When he woke up that way, he’d take a dozen or so soda crackers and crush them in a cereal bowl and pour about a half a cup of brandy, I believe it was blackberry or cherry, over the cracker and eat them. Me, I just take the brandy."—Anonymous, Eckner’s Restaurant, Detroit. Stenographer; white, female, around 30.
"Get yourself a young virgin not over eighteen and … [perform cunnilingus—vividly described]” (Paulsen’s elision)—Anonymous, Detroit. Dentist; Negro, male, about 40; born and reared in the South; had been practicing dentistry quite successfully in Detroit for the past five years.
More scientifically based advice here. Forty-nine more hungover cats here. Hungover owls here, because why not.
The Dish 