Combine the grilled lemons, mint leaves and simple syrup in the bottom of a shaker cup. Muddle the ingredients for 10 - 20 seconds.
Add the bourbon and some ice. Seal your shaker and shake for 10 to 20 seconds.
Double stain into a glass with fresh ice. Garnish with a grilled lemon wheel and enjoy!
Notes
Simple syrup can be bought at the store if you feel like wasting money. All you need to do bring equal parts sugar and water (eq: 1 cup sugar and 1 cup water) to a boil (without mixing) and cool.