Lisa's Special Daiquiri

Chill a cocktail coupe in advance.

Prepare a grapefruit zest twist for garnish.

Shake the vanilla rum, freshly squeezed lime juice, vanilla sugar syrup, and pink grapefruit juice with ice until well chilled.

Fine strain the mixture into the pre-chilled coupe.

Express the grapefruit zest over the cocktail to release its oils, then use it as a garnish.