In a large pot, combine the apple cider, orange slices, and lemon slices.
Add brown sugar to the mixture and stir until dissolved.
Stir in the cinnamon sticks, ground ginger, ground cloves, and allspice.
Bring the mixture to a gentle boil over medium heat.
Reduce heat and let it simmer for 30 minutes.
If using, stir in the brandy just before serving.
Strain the mixture to remove fruit slices and spices if desired.
Serve hot in mugs, garnished with fresh apple slices.
Keep warm on low heat if serving at a party.
Enjoy the comforting flavors with friends and family!