Put the sugar in a saucepan and add the measured water. Heat over a low heat, stirring occasionally, until the sugar has completely dissolved. Bring to the boil and add the cranberries, orange or clementine rind and cinnamon. Simmer for 5 minutes until the skins of the cranberries have split but the berries are still holding their shape. Take off the heat, add the orange or clementine juice and leave to cool.