The fast-food chain Quick will offer low-priced foie gras burgers in France as a pre-Christmas special. The “Supreme Foie Gras” is 5€ ($6.57, £4.20) and will be available at more than 340 Quick outlets across France from December 17 to 19. The sandwich contains beef, relish, lettuce and duck foie gras; Quick said the foie gras will be in slices but the photo they've released shows little (not so appealing) cubes. The Supreme Foie Gras has 672 calories compared to the standard burger's 633. "We want to give our clients great taste at cheap prices and give them the possibility to party a little ahead of time," Quick's 's marketing director Laurent Niewolinski told Reuters. Foie gras comes from the liver of force-fed ducks or geese; activists denounce the practice as cruel, saying the process causes the animals enormous suffering. Foie gras is, of course, a traditional dish in French cuisine and a particular delicacy at Christmas. To compete with McDonald's, Quick's strategy includes offering unusual burgers, like this one, on a short term basis. Earlier this year, the company sparked a debate in France by opening Halal-only outlets and releasing a Halal version of one of its burgers--replacing the bacon with turkey--in some of its other stores.