Why is coffee called "joe"?
There's no consensus on how coffee got the nickname "a cup of joe," but there are a bunch of theories, some way more plausible than others. The most likely is that other nicknames for coffee—"java" and "mocha"—got smushed into one word, "jamoke," which got shortened to "joe" over time.
The next theory in terms of plausibility is that "joe" has a long history of standing in for the common man, and since coffee came to be the common, everyday beverage, the two were a natural fit.
There are other popular theories—like the one claiming "joe" is an homage to Josephus Daniels, who banned alcohol on Navy ships in the early 1900s and thus sparked an uptick in coffee consumption among the crews—but they're not very well proven.
The term â??joeâ?? for coffee dates back to the World War I era.
Josephus Daniels, Secretary of the Navy under Woodrow Wilson, tried
to improve the morality of the sailors by banning certain things
like prostitution and alcohol on the bases. As a substitute for
alcohol, coffee rose in importance and the beverage came to be
associated with Daniels. Originally disparagingly called â??A cup
of Joseph Danielsâ??, it was soon shortened to â??A cup of