Step 1: Rinse the fresh cranberries in a colander and remove any damaged or soft berries.
Step 2: In a medium saucepan, combine the sugar, orange juice, and water over medium heat.
Step 3: Stir the mixture until the sugar is completely dissolved and the liquid reaches a gentle boil.
Step 4: Add the cranberries, orange zest, and a pinch of salt to the saucepan.
Step 5: Simmer the mixture for 10-12 minutes, or until the cranberries have burst and the sauce has thickened slightly.
Step 6: Remove from heat and let cool completely; the sauce will continue to thicken as it sits.