On a shallow plate, combine the sugar and lime zest. Run the lime wedge around the edge of your glasses, then invert each glass into the plate to create a sugar/lime rim.
In a cocktail shaker, add blackberries, mint, lemon juice and honey. Muddle all of the ingredients together, squishing everything to release the juices. Then add the bourbon.
Add ice to your rimmed glass and pour the drink over the ice. Pour the ginger beer over, gently stirring to combine. Garnish with fresh mint and enjoy
