01 - Rinse cranberries thoroughly and remove any soft or damaged berries.
02 - In a medium saucepan, mix cranberries, orange zest and juice, chopped apple, sugar, maple syrup if using, cinnamon, ginger, and salt.
03 - Cook over medium heat, stirring occasionally, until cranberries burst and the mixture thickens, approximately 10 minutes.
04 - Remove from heat and let cool to room temperature; relish will continue to thicken as it cools.
05 - Transfer to a sanitized jar and refrigerate. Consume within two weeks.