01 - In a small saucepan, combine sugar, water, and salt. Heat over medium heat, stirring frequently, until sugar dissolves fully (2–3 minutes). Remove from heat and cool to room temperature.
02 - Stir in fresh lemon juice and lemon zest into the cooled syrup. Incorporate vodka if using.
03 - Pour the sorbet base into a shallow container and refrigerate for at least 1 hour until thoroughly chilled.
04 - Transfer chilled mixture to an ice cream maker and churn per manufacturer’s guidance, approximately 20–25 minutes, until soft sorbet texture develops.
05 - Place churned sorbet into an airtight container and freeze for at least 3 hours.
06 - Allow sorbet to soften at room temperature for 5 minutes before scooping into bowls or glasses for serving.