How about a social coffee tradition?
Fliegender Kaffee (German for flying coffee) is a social coffee tradition in Berlin. The idea is simple: buy one coffee for you, and one for a person who can’t afford one that day (homeless, student, unemployed, …). The concept was born in Naples over 100 years ago, and now, thanks to Fliegender Kaffee, more and more cafés and bars have adopted the tradition in Berlin.