U-Boot

U-Boot

A U-Boot is a beer cocktail that is made by placing a shot of vodka into a glass of beer, typically a lager.

It is popular in Germany, Poland, North Macedonia, and Flanders.

In Germany, the liquor korn is sometimes used instead, while in Flanders and the Netherlands, jonge jenever is preferred.

It is called a u-boot because the shot glass of vodka sinks to the bottom of the glass of beer.

The shot glass then “surfaces” when the cocktail is drunk.

References
U-Boot (beer cocktail)