In a medium saucepan, combine sugar and water over medium heat. Stir until the sugar is fully dissolved, creating a simple syrup. Remove from heat and let cool.
In a blender, combine the raspberries, lemon juice, lemon zest, and the cooled simple syrup. Blend until smooth.
Pour the raspberry mixture through a fine mesh strainer into a large bowl to remove the seeds. Use a spatula to push the mixture through for maximum juice extraction.
Once strained, cover the bowl and place the mixture in the refrigerator for about 1 hour to chill.
Pour the chilled raspberry lemonade mixture into an ice cream maker and churn according to the manufacturer’s instructions until it reaches a soft-serve consistency.
Transfer the sorbet to a lidded container and freeze for at least 4 hours or until firm.
Before serving, let the sorbet sit at room temperature for a few minutes to soften slightly for easier scooping.
Notes
Serve in elegant dessert bowls, garnished with fresh mint leaves and whole raspberries.