Mix the grapefruit soda, orange juice, and coconut rum in a shaker (optional) or directly in the glass.
Pour the mixture over the ice.
Stir gently and enjoy!
Notes / Tips / Wine Advice:
Serving Tip:Garnish with a slice of grapefruit or orange for an extra splash of color and flavor.Wine Advice:While not wine-based, this pairs well with a dry prosecco or sparkling wine for a spritz-like twist.