Gluhwein, spiced or mulled wine served hot is a German tradition. It is often sold in the Christmas Markets (Weihnachtsmarkt) which also sell Christmas items like advent calendars and ornaments. In Nordic countries it may be called Glogg and in England it's refered to as Wassail.
Gluhwein recipe from one of my favorite German recipe websites: http://www.kitchenproject.com/kpboard/recipes/Gluhwein.htm
Cooking With Mickey Blog