Korn has long been the go-to to get your drink-on for for any boozer on a budget. Korn is the cheapest kind of spirit available in Germany and at an alcohol content of 32% to well above 40% ABV it's no wonder what makes Korn popular (it certainly isn't the taste).
Korn is a colourless spirit that is usually made from fermented rye but may also be made from corn, barley, wheat or whichever grain is on hand. Korn differs from vodka in that it is less filtered and therefore, less pure. It has more of of a cereal taste than vodka and generally is pretty rough on the way down.
In Germany Beer is often ordered together with a Kurzen (a shot of Korn). This combination is called a “Herrengedeck” (“gentlemen’s cover”) in most of Germany.
If you find yourself looking to party in Germany with only a few Euros in your pocket search for Korn and you will not be disappointed (you will be drunk).