Refresh your palate with this tropical-drink-inspired treat. For a fun serving idea, scoop the sorbet into hollowed-out lime halves and garnish with mint sprigs.
1. Bring sugar and 1/2 cup water to a boil in medium saucepan over medium heat. Boil 1 minute, or until sugar is dissolved. Remove from heat, and add mint leaves. Cover, and cool.
2. Transfer mint syrup to blender or food processor, and blend until mint leaves are finely chopped. Add cucumber chunks, and blend until very smooth. Chill in refrigerator until cold. Stir lime juice and rum (if using) into chilled mixture.
3. Churn in ice cream maker according to manufacturer’s directions. Transfer to 1-quart container, and freeze.