Earnest Hemingway was well known for his writing, but another skill he had was the ability to hammer down a lot of booze. This cocktail is made with his preferences in mind, but there were a few additions in order to make it a little more palatable. After all, Hemingway basically drank straight Rum.
I can appreciate a good Last Word cocktail for sure. It is one of those drinks that introduced me to the world of Green Chartreuse.