How to Make It
In a mortar, crush the cinnamon and cardamom. Transfer to a 1-quart jar. Add the ginger, orange zest, cloves and vodka. Cover; let stand for 24 hours.
Strain the vodka into a large saucepan; discard the solids. Add the remaining ingredients and stir over moderate heat until bubbles form around the edges; do not boil. Serve hot.