The Zombie is one of Donn Beach's original and legendary tiki drinks—boozy, complex, and transporting. This version is slightly adapted from tiki talent Jeff Berry's recipe collection, Beachbum Berry Remixed. —Samantha Weiss Hills
In a small saucepan, make a simple syrup by heating the sugar, water, and cinnamon sticks. Bring the mixture to a boil and stir until the sugar is dissolved. Let it simmer for 1 to 3 minutes, and then remove it from the heat. Let the syrup infuse for up to 2 hours, and then strain it into a separate container.
To finish the mix, add one part of the syrup to two parts fresh squeezed grapefruit juice.
For the cocktail:
Add all of the ingredients—except for the mint—to a blender, reserving the ice for last.
Blend on high speed for 5 to 7 seconds, or until the crushed ice is a consistent size. Pour into two glasses and garnish with fresh mint sprigs.