Chill the Glass: Start by chilling your cocktail glass. You can do this by filling it with ice water and setting it aside while you prepare the cocktail.

Mix the Ingredients: In a cocktail shaker, combine the white rum, freshly squeezed grapefruit juice, maraschino liqueur, and simple syrup.

Add Ice: Fill the shaker with ice, covering the liquid entirely.

Shake It Up: Secure the shaker lid and shake vigorously for about 15-20 seconds. You want the mixture to be well chilled and slightly frothy.

Strain the Cocktail: Empty the ice water from your chilled cocktail glass. Using a strainer, pour the shaken mixture into the glass.

Garnish: Finish with a twist of grapefruit peel or a cherry on top for a pop of color and added flavor.

Enjoy: Take a moment to admire your handiwork before savoring every sip of this refreshing cocktail!