Place apple slices in a slow cooker that holds at least 6 quarts. Fill with water until it looks like the water could cover the apples by an inch if they were submerged.

Add orange slices and spices. Cover and cook on low for seven hours or high heat for three hours. Alternatively, place ingredients in a large stockpot and bring to a simmer over medium-high heat. Cover, reduce heat and continue to simmer until apples are tender enough to mash into a pulp, about two to three hours.

Using a potato masher, mash the apples until they turn into a pulp. Strain through a cheesecloth-lined fine-mesh sieve. If desired, strain a second time. Stir in dark brown sugar until it dissolves and taste. You can always add more spice or sugar if you find it necessary or water for a milder flavor.

Pour in mugs and add an optional shot of bourbon or spiced rum if desired. Enjoy!