I found the recipe!
CIDER MULLS
How to make a cider mull...
Using a juice orange (that has a thin skin), cut in half crosswise, removing all the pulp and skin.
Dry the skin. You can do this by putting them above the refrigerator (there is some heat that comes off the back of the fridge) or by putting the skins over an inverted cupcake pan in a low oven (about 150) for about an hour or two. You will want to take the skins off the pan at this point, you can put them back in the oven (with the oven turned off) over night. Keep checking to make sure that you have the skins totally dry before you go any further. Next you will pack the dried skin with brown sugar. On top of the sugar arrange some whole cloves, whole allspice and a cinnamon stick.
Wrap the completed cider mull in a piece of plastic wrap. You will want to place the wrap so that the pretty side of the mull is up and the gathers of the plastic are to the back. Finish off with a piece of ribbon or other decoration.
Add one mull to one quart of apple cider and simmer covered for 30 minutes. Serve hot or cold.