01 - Combine sugar and water in a small saucepan. Heat over medium heat, stirring continuously until sugar completely dissolves. Remove from heat and allow syrup to cool to room temperature.
02 - Whisk together cooled syrup, lemon juice, lemon zest, and sea salt in a large mixing bowl until fully incorporated.
03 - Transfer mixture to ice cream maker and churn according to manufacturer's instructions for 20-25 minutes until mixture thickens to slushy consistency.
04 - Pour churned sorbet into shallow freezer-safe container. Cover tightly and freeze for minimum 4 hours or until firm enough to scoop.
05 - Scoop sorbet into individual bowls or glasses. Top each serving with fresh mint leaves immediately before serving.