01 - In a medium saucepan, combine cinnamon sticks, cloves, star anise, sliced ginger, orange zest, lemon zest, and cold water.
02 - Bring to a gentle boil over medium heat. Reduce heat and simmer for 10 minutes to allow the spices and citrus to infuse.
03 - Remove the saucepan from heat. Add the tea bags and steep for 3 to 5 minutes, adjusting steeping time to desired strength.
04 - Remove tea bags and strain the liquid through a fine mesh strainer into a teapot or heatproof pitcher.
05 - Stir in sweetener if desired, then pour into mugs and serve hot. Garnish with orange slices or cinnamon sticks as preferred.