Pour the apple cider into your large heavy-bottomed saucepan and place it over medium heat.
Add the cinnamon sticks, star anise, and whole cloves to the cider. Stir gently to distribute the spices evenly.
Bring the mixture to a gentle simmer, just until small bubbles start to form around the edges—about 5 minutes.
Lower the heat slightly and let the cider simmer slowly for about 20 minutes, allowing the spices to infuse and the aroma to fill your kitchen.
Remove the saucepan from heat and strain the cider through a fine-mesh strainer into a serving bowl or pot, discarding the spices.
Stir in honey or sugar to taste, adjusting sweetness as desired.
Garnish each cup with fresh apple slices and a twist of lemon zest if using, for a bright, fresh touch.
Serve the hot spiced apple cider immediately, enjoying its fragrant warmth and comforting spices.