Lightly muddle the mint and sugar with a splash of soda water in a mixing glass until the sugar dissolve and you smell the mint.
Squeeze the lime into the glass, add rum and shake with ice.
Strain over cracked ice in a highball glass.
Top with soda water, garnish with mint sprig and serve.

Highball glass

  • 2-3 oz Light rum
  • Juice of 1 Lime
  • 2 tsp Sugar
  • 2-4 Mint
  • Soda water