Zombie

In a shaker tin with ice:

• 1.5 oz aged rum

• 1 oz dark rum

• 1/2 oz cinnamon syrup

• 1/2 oz falernum

• 1/2 oz grapefruit juice

• 1/2 oz lime juice

Shake well and strain into highball glass over ice. Add 8 drops Crude Bitters.