1 oz. seltzer
3/4 oz. fresh lime juice
1/2 oz. cinnamon syrup
1/2 oz. Cherry Heering
2 oz. blended lightly aged rum
1 dash Angostura bitters
Garnish: Grated cinnamon and mint sprig
Pour the seltzer in a Collins or highball glass. Add remaining ingredients to a cocktail shaker with cubed or cracked ice. Shake and strain into the Collins or highball glass. Carefully add cubed or cracked ice to the glass to fill and garnish with grated cinnamon and a mint sprig.