SHAKE all ingredients with ice and fine strain into chilled glass.
Orange zest twist (discarded) & dust with grated nutmeg
Obviously creamy but not too sweet with a great balance between the port and the calvados.
Created in 2007 by Chris Jepson at Milk and Honey, London, England. Chris' original recipe also contained 3/4 shot of cream. However, strictly speaking flips contain egg but not cream.