I served a variation of this before Thanksgiving dinner today. I used a mixture of bourbon and applejack, but in roughly the same proportions. I made the drink in advance and put cinnamon sticks in place of the cinnamon syrup. Guests really enjoyed it, as did I.
With so little lime juice, I would not think this sour enough to need an egg white.
But I did add a splash of pimento dram to add to the mysterious funkiness of the pisco.
This is MUCH drier than the recipe featured in the New York Times today. they featured this in an article about this drink and cocktail culture in New Orleans. Called for 2oz gin, 3/4 oz vermouth, and 1/6 oz absiinthe. Making this my Halloween cocktail tonight.