"Restaurant Blau Grifeu in Llanca charges rude customers €5 for their morning pick-me-up while those who behave more graciously pay just €3."
"Saying 'please' and wishing the barista a good morning will get you a coffee for as little as €1.30.
Marisel Valencia Madrid, the owner of Restaurant Blau Grifeu, said the scheme is working and that customers are beginning to be more polite to her staff.
“People seem to be in a rush these days and forgetting to say 'please' when they ask for something,” she told the Times.