Eyes bigger than your stomach? Piling your plate with more than you can eat may now cost more, as two buffet restaurants in Brittany have begun charging €5 extra if you do not finish your meal.

The restaurants in Quimper say they have introduced the system to raise awareness of the problem of food waste and the rising difficulty of sourcing quality produce.

Every year in France, 10 million tonnes of food is thrown away, costing €16 billion, show Ecology Ministry figures. Onestudy by French ecology agency Ademe (l’Agence de la transition écologique) even found that waste represents a third of ‘consumption’.