01 - Rinse cranberries, discarding any that are soft or bruised.
02 - In a medium saucepan, mix cranberries, orange juice, orange zest, sugar, and water.
03 - Heat over medium, stirring until sugar fully dissolves.
04 - Bring mixture to a simmer and cook for 10 to 12 minutes, stirring occasionally until cranberries burst and sauce thickens.
05 - If desired, stir in ground cinnamon and a pinch of salt.
06 - Remove from heat and allow sauce to cool to room temperature, thickening further as it cools.
07 - Transfer to a serving bowl or an airtight container and refrigerate until needed.