According to the Quickdraw Mixology Webisode Special, where they gave the recipe of a genuine drink of the 1800's, this episode you had to drink a sip of Santina's Pousse Cafe every time someone mentioned the word "Marshall".
The recipe to Santina's Pousse Cafe is: 1/3 cup Cognac brandy, 1/3 cup Maraschino, 1/3 cup Curacao.