Espresso

From Frikipedia

Strong coffee. Used as a primary ingrediant in Americanos and for any task which requires staying up for sixteen hours.

Some espressos are palatable drinks in their own right. Others, usually the variety made by cafeterias in large office buildings, are a disgusting syrupy mess designed to be downed in one by bleary-eyed office monkeys before they stagger back to their desks, dry retching from the revolting taste now burned into the lining of their mouths.