Makes about 4 1/2 cups, serving 4 to 6.
In a saucepan submerge the tea bags in the boiling water and remove the pan from the heat. let the tea bags steep for 5 minutes and discard them. To the tea add the sugar, the cranberry juice, the star anise and the zests and simmer the mixture, covered, stirring
occasionally, for 10 minutes. Stir in the orange juice and the rum and heat the mixture over moderate heat until it is hot. Discard the zests, divide the tea among heated mugs, and garnish each drink with 1 of the star anise and a lemon slice.