2 oz Gambler 500 Whiskey
.25 to .5 oz Demerara (brown sugar simple syrup)
1/2 large peach, diced, muddled (about 1/2 cup)
3-4 large mint leaves (slapped to express oils)
Shaken, strained to collins glass
splash ginger beer to top
fresh mint and peach slices, for garnish