It's more than that. Coffee transfers your doubts and fears to your shadow.
Let it stumble over things in the dark.
Let it clumsily move around.
Let it drag itself around in the morning ... I have my coffee.
Add coffee to the list of magical things in the muggle world: magnets, rainbows, and electricity.
If Hogwarts sold coffee, I'd buy it.
I noticed all they sell is pumpkin juice and tea. Of course, there’s butterbeer, but...