Combine first 7 ingredients in a saucepan, stirring until sugar dissolves. Bring to a simmer; cover and cook 30 minutes. Remove cloves and cinnamon sticks from pan with a slotted spoon. Serve warm or chilled. Garnish with orange rind curls, if desired.
Note: For a Poinsettia Cocktail, add 1 tablespoon vodka to each serving; the calories go up to 150 per serving.