The word "en papilotte" means "parchment paper". So the name indicates the fish salmon cooked in parchment paper. it is famous in all over France. Visiting France and not being able to taste this is an absolute bad luck but still it is not hard to coo it at home. All you have to do is wrap salmon along with vegetables and other spices in a parchment paper and let them cook together so the juices and taste blend into the fish well.