A visit to the Christmas market is not the same without a Gluhwein (red wine with added sugar and spices, served warm). What I really like in Germany is the Pfand system - you pay an extra two euro deposit and you get to drink out of a real cup! When you bring the cup back, you get your deposit back. Gluhwein definitely tastes better out of real mugs and they hold the heat longer than paper or plastic so you have more time to savor your drink. Cheers!