1 half organic lime
1 tsp brown sugar to taste
crushed ice
1.5-2 oz rum (4-6 cl)
7 oz Club Mate (20 cl)
Cut half an organic lime into cubes.
Pour brown sugar into a tall cocktail glass.
Add the lime cubes to the glass and mash.
Add crushed ice.
Pour the rum over it.
Top up with Club Mate.