Spread fresh cherries evenly onto a parchment lined baking sheet. Freeze for 4 hours or overnight.
When ready to make sorbet, add sugar and water to small pot. Heat over medium, stirring, until sugar has dissolved. Remove from heat. Cool.
Add cherries, simple syrup, lime juice, and bourbon to food processor or blender. Blend until smooth, stopping every minute or so to scrap the sides.
Once blended, add the mixture to a loaf pan and freeze for 1 hour.
After 1 hour, stir sorbet and place back into the freezer for 2 or more hours, until frozen and easy to scoop.
Serve the sorbet with fresh mint leaves, if desired.
Store sorbet in loaf pan covered with plastic wrap.