herr professor

1 1/2 oz Lustau Oloroso Sherry
1 oz Dos Maderas (5+5) PX Rum
1/4 oz Aveze Gentian Liqueur
1/4 oz Luxardo Maraschino Liqueur
1 dash Regan's Orange Bitters

Stir with ice, strain into a rocks glass, and garnish with orange oil.
For my second drink at Estragon, I asked bartender Sahil Mehta for the Herr Professor from his drink notebook which seemed like an intriguing riff on the Arawac. Once built, it gave forth bright orange oil aromas over the sherry's nutty grape (with perhaps nutty assistance from the Maraschino). Next, a dry and savory grape sip led into a nutty swallow with a earthy-bitter herbal gentian finish.