Add Malibu Original rum, lemonade, and if desired, cranberry or pineapple juice.
Shake lightly for about 10 seconds, just enough to mix.
Strain into a highball glass filled with fresh ice.
Top with club soda or sparkling water.
Stir gently with a bar spoon to keep the fizz.
Garnish with a lemon wheel or wedge. Serve immediately.
Notes
Make it sweeter with more pineapple juice, or add cranberry juice for a tart twist. For a crowd, scale up and mix in a pitcher—add soda right before serving. Chill all your ingredients and glassware for extra refreshment.