Place cinnamon, cloves, and allspice in a double thickness of cheesecloth; bring up corners of cloth and tie with a string to form a bag. Place cider and brown sugar in a slow cooker; stir until sugar dissolves. Add spice bag. Place orange slices on top. Cover and cook on low for 2 - 5 hours. Remove spice bag before serving.
Yield: 16 servings