16 young and healthy men of normal weight who all liked both dark and milk chocolate took part in a so-called crossover experiment at University of Copenhagen. They had all fasted for 12 hours beforehand and were offered 100g of chocolate, which they consumed in the course of 15 minutes. The calorific content was virtually the same for the milk and dark chocolate. During the following 5 hours, participants were asked to register their appetite every half hour, i.e. their hunger, satiety, craving for special foods and how they liked the chocolate. Two and a half hours after eating the chocolate, participants were offered pizza ad lib. They were instructed to eat until they felt comfortably satiated. The results were significant. The calorie intake at the pizza meal was 15 per cent lower when they had eaten dark chocolate beforehand. Merry Christmas.