Place the cranberries, grated orange rind, cinnamon, orange juice, brown sugar and enough water to cover cranberries in a saucepan. Bring mixture to a boil over high heat. Immediately turn heat down and simmer for about 1 hour or until the sauce has thickened. Taste for sweetness and adjust with additional sugar if necessary. You can not overcook, so continue cooking until you have a good thick consistency. Let mixture cool a bit then refrigerate in a covered container.