How did they manage to achieve it?
A coffee shop in Evosmos serves coffee and more specifically cappuccino with its logo painted on it Thessaloniki metro.
The specific job is done by a special printer, which is connected to a mobile app and can print any design the customer wants, as mentioned in the show “Day with Color” by ERT.
After… order, well, it was printed on the coffee the logo of the Thessaloniki metro, which is also the topic of discussion in the city.