Pour the apple juice into the slow cooker. Add the fresh cranberries, whole cloves and cinnamon sticks.
Set on high for 4 hours. Strain the cranberries, cloves and cinnamon sticks before serving.
The cranberries will pop and release their tart juices. The sweetness of the apple juice will balance it out. If you wish for a sweeter cider, then add a few Tbsp of brown sugar to sweeten it up!