5 Mint Leaves - (more)
2 1/2 oz. Bourbon Whiskey - (more)
1 oz. Lime Juice - (more)
1 tsp. Sugar - (more)
1/2 oz. Green Creme de Menthe - (more)
Carbonated Water - (more)
Blend all ingredients (except carbonated water) in an electric blender at a low speed for a short length of time. Pour into a collins glass over ice cubes. Fill with carbonated water and serve.