Hair of the dog that bit you

Jeeves, valet to Bertie Wooster, is one of the most renowned characters of English fiction. How did he garner fame and notoriety? Well, it all began on the day that Bertie hired him in the first of P. G. Wodehouse's Jeeves stories. Jeeves confronts Bertie's [wretched] hangover with his magic potion: raw egg, Worcester sauce, and red pepper. As Jeeves puts it: "It is the Worcester sauce that gives it its colour. The raw egg makes it nutritious. The red pepper gives it its bite. Gentlemen have told me they have found it extremely invigorating after a late evening."

Jeeves and the Art of Curing the Hangover (Serious Eats)