First Cocktail 5,000 Years Old
Praxiteles writes "The first cocktail was...grog?! From the article: 'The first cocktail ever was made in Mesopotamia 5,000 years ago, using wine, beer, apple juice and honey. Patrick McGovern defined the mix as "grog", an archaic drink that in the United States is sold as the Midas Touch'."
I'm not sure about other English speaking parts of the world, but Australians still refer to "grog" as a general term for alcoholic drinks.
Interestingly, dictionary.com quotes its origins as such
"After Old Grog, nickname of Edward Vernon (1684-1757), British admiral who ordered that diluted rum be served to his sailors, from grogram(from his habit of wearing a grogram cloak)."
It's true. Pirates used rum to keep stagnant water from making them sick.
Grog is not (straight) rum, there was no Admiral Grog, and the sailors already drank rum, since the 17th C, and it became part of their official ration in 1731.
"Old Grog" was the nickname of Admiral Vernon (1684-1757), from his grogram cloak, afterwards applied to the mixture he ordered to be served out to sailors instead of neat rum.