Pour 0.75 oz of lime juice, 0.75 oz of grapefruit juice, 0.5 oz of homemade falernum syrup, 0.5 oz of passionfruit syrup, 0.35 oz of pimento dram liqueur, 1.5 oz of white rum and 1 oz of overproof rum into a shaker
Fill the shaker with crushed ice and shake
Pour together with ice into a tiki mug
Garnish with a mint sprig and a lime half with a sugar cube soaked in absinthe
Light the sugar on fire and sprinkle it with ground cinnamon