Manhattan
Sugar Kane (Marilyn Monroe)
On the overnight train, Sugar and the all-girl band throw a party in an upper berth and mix Manhattans in a rubber hot-water bottle.
Sources: Tasting Table: 15 Most Iconic Cocktails From Film And Television; Far Out Magazine: The five greatest cocktails in cinema history; GamesRadar+: 7 classic cocktails and the best movies to watch them with