In a cocktail shaker filled with ice, combine dark rum, gold rum, demerara overproof rum, lime juice, grapefruit juice, falernum, cinnamon syrup and grenadine.
Shake well and strain into a tall tiki mug filled with ice.
Add a dash of Angostura bitters over top of the drink.
If desired, add a few drops of Pernod as well.
Lastly, garnish the drink. Spear one or two Luxardo cherries on a cocktail pick and place on top of the drink. Add some fresh mint and perch an orange slice on the rim of the glass.
Serve immediately with a straw if you like.
Notes
For the freshest taste, use fresh citrus juices from lime and grapefruit.
Cut costs and increase flavor by preparing some of your own cocktail ingredients, like cinnamon simple syrup and homemade grenadine.
Tiki drinks are famous for their lavish garnishes. Be sure to top your drink off with homemade cocktail cherries, fresh mint and a slice of orange or lime.