01 - In a medium saucepan, mix cranberries, diced apples, sugar, orange juice, water, cinnamon, nutmeg if using, and salt.
02 - Bring to a gentle boil over medium-high heat, stirring occasionally to combine flavors.
03 - Reduce heat to medium-low and simmer for 15 to 20 minutes, stirring occasionally until cranberries burst and apples become soft.
04 - Remove from heat. Mash with a fork or briefly blend for a smoother consistency, or leave chunky as preferred.
05 - Allow to cool to room temperature; the sauce will thicken upon cooling. Serve chilled or at room temperature.