01 - Rinse cranberries thoroughly and discard any that are soft or discolored.
02 - In a medium saucepan, combine water, orange juice, sugar, orange zest, cinnamon stick, and salt. Heat over medium until sugar dissolves and mixture simmers.
03 - Add cranberries to the saucepan and cook, stirring occasionally, until berries burst and sauce thickens, about 10 to 12 minutes.
04 - Remove from heat, discard cinnamon stick, and let sauce cool to room temperature. It will thicken further as it cools.
05 - Transfer sauce to serving dish or airtight container. Refrigerate until ready to serve.