In a saucepan, combine water and sugar over medium heat. Stir until the sugar dissolves completely to create a simple syrup. Remove from heat and let it cool.

Once cooled, mix the simple syrup with lemon juice, lemon zest, and chopped mint leaves. Stir well to combine.

Pour the mixture into a shallow dish and freeze for 1 hour.

Remove from the freezer and stir vigorously with a fork to break up ice crystals. Repeat this process every 30 minutes for 4 hours, or until the sorbet has a smooth texture.

Scoop into bowls or glasses and serve immediately for a refreshing treat.