In a Tall Highball glass, muddle simple syrup and mint leaves, using the TAG solid cherry wood muddler as the trick its to muddle just enough to release the oils from the mint leaves while leaving the mint leaves intact. Add ice to your TAG Lewis bag, crushing it with your TAG Muddler. Add crushed ice and rum. Stir until the outside of the glass begins to frost. Spritz with chilled soda water. Garnish with a powdered sugar dusted mint sprig.