This drink was a favorite of American expats during Prohibition. Prior to then it was known as the Milano-Torino, for the cities where its two main ingredients were first made: Milan (Campari) and Turin (sweet vermouth).

As the story goes, Ernest Beaumont-Gantt created this potent drink in the 1930s and named it for its mind-altering effect after a friend consumed three of them. This lower-proof version is made with Velvet Falernum, an almond-and-lime-flavored liqueur that's a key ingredient in many tiki drinks.

Robert Vermeire's 1922 book Cocktails: How to Mix Them attributes the sidecar to the celebrated bartender MacGarry, who worked at London's Buck's Club.

In his 2001 book Straight Up or On the Rocks, William Grimes claims that Ernest Hemingway "often worked his way through about a dozen of these lime slurpees, sometimes ordering doubles, which became known as Papa Dobles."