Sailor's Swizzle

Use 2:1 rich simple syrup for its listed portion.

Chill a highball glass in preparation for serving.

Prepare a garnish using aromatic bitters and a twist of lime zest.

Pour the light gold rum, Cockburn's Ruby Soho Port, St. Elizabeth Allspice Dram liqueur, freshly squeezed lime juice, and rich sugar syrup into the chilled glass.

Fill the glass two-thirds full with crushed ice and swizzle the mixture thoroughly.

Top up the glass with additional crushed ice and swizzle again to ensure even mixing.

Garnish with the lime zest twist and dash aromatic bitters over the ice cap.

Serve immediately with a straw.