Place the apple cider in a medium heavy saucepan over medium heat. Add the remaining ingredients and bring to a simmer (little bubbles will form around the edges). Turn the heat down to low and allow the cider to cook for about 20 minutes. Strain through a fine mesh strainer and serve. Or, if you don’t have a strainer, just put the brown sugar and the cider in the pan, then put the cinnamon sticks, nutmeg, orange zest, and cloves in cheesecloth, tie up in a little pouch, and drop in the cider mixture like a bouquet garni. Then, when you are ready to serve, simply remove the pouch of spices and pour the cider into glasses. Makes 8 servings.