Pour the white rum, coconut water, and fresh lime juice into the shaker.
Shake vigorously for 10-15 seconds until well chilled.
Fill a highball glass with fresh ice cubes.
Strain the mixture into the glass.
Garnish with a lime wheel and optional mint sprig.
Notes
The best results come from using fresh coconut water rather than processed versions. Natural coconut water adds subtle sweetness and minerals to the drink.Store-bought coconut water works in a pinch. Look for brands without added sugars or preservatives.The cocktail can be made stronger or weaker by adjusting the rum-to-coconut water ratio. Start with less rum for a lighter drink.Pre-chill the coconut water and rum for an extra cold cocktail. This reduces the need for excessive ice that might water down the drink.