1. Add apples, oranges, lemon, cinnamon sticks and whole cloves to a slow cooker and fill with water. Cover and simmer for at least 4 hours or until apples are super tender.
2. Use a potato masher to mash up all the ingredients. Cover and cook for another hour.
3. Strain mixture several times into a pitcher using a fine mesh strainer or cheesecloth until smooth. Stir in vanilla extra. Add maple syrup. Serve steaming hot or ice cold, garnished with a fresh cinnamon stick and chopped apples.