01 - Combine cranberries, sugar, and water in a medium saucepan. Bring to a boil over medium heat, then reduce heat and simmer for 8 to 10 minutes, until cranberries burst and soften.
02 - Remove saucepan from heat. Stir in fresh lemon juice, orange zest, and a pinch of salt. Allow to cool slightly.
03 - Transfer the mixture to a blender or food processor and blend until completely smooth.
04 - Strain the purée through a fine-mesh sieve into a bowl to remove skins and seeds, discarding solids.
05 - Refrigerate the strained mixture for at least one hour to chill thoroughly.
06 - Pour the chilled mixture into an ice cream maker and churn according to the manufacturer’s instructions—typically 20 to 25 minutes—until thick and slushy. If an ice cream maker is unavailable, pour into a shallow pan and freeze, stirring vigorously every 30 to 45 minutes until smooth and frozen, approximately four hours.
07 - Transfer the churned sorbet into a container, cover, and freeze for a minimum of two hours until firm.
08 - Scoop sorbet into serving bowls and garnish with strawberries, blueberries, diced mango or kiwi, and optional fresh mint leaves.