Coffee liqueur

O God, that men should put an enemy in their mouths to steal away their brains! that we should, with joy, pleasance, revel, and applause, transform ourselves into beasts!
~Cassio (in Shakespeare's Othello)

I found a recipe for coffee liqueur, and I was more than inspired to make it. Surprisingly it doesn't have a very strong coffee flavour, but it's very good nonetheless.