Hair Trigger

Name: Hair Trigger
Ingredients: 2 long cucumber slices, one for shaking and one for garnish; 0.5 oz Angostura Bitters; 0.5 oz ginger-lime syrup; 1 oz Barrow's Intense Ginger Liqueur; 0.75 oz lime juice; 0.75 oz Fernet Branca; 0.75 oz Pampero Venezuela Aniversario Rum; Mint plouche for garnish