Glühwein,” which literally means “glowing wine,” is served at every Christmas market in Germany. It often comes in a limited-edition, seasonally inspired and creatively adorned ceramic mug. For a small additional fee, you can either keep this cute little mug as a memento of a visit to a particular Christmas market – often the year and name of the town or city where you purchased your cup of Glühwein is inscribed on the mug – or you can return it to get your deposit (Pfand) back to buy something else, like your next glass of Glühwein …