German mulled wine will warm you up after dashing through the snow. It includes dry red wine, cloves and citrus. To make it in the slow cooker, follow step 1 of the recipe, but instead of step 2, put the sugar, water and cinnamon sticks in the slow cooker.
Turn it on high and let it simmer while stirring occasionally. When the sugar is dissolved, set the heat to low and let it simmer about 20 minutes. Then go on to step 3.