Adapted from The Spruce Eats
1 1/2 ounces Zwack Unicum Herbal Liqueur
1/2 ounce sweet vermouth
1 tsp orange curacao
optional: orange twist for garnish
Combine Zwack, vermouth, and curacao in a cocktail shaker filled with ice. Stir well until well-chilled. Strain into a martini or coupe glass. Garnish with optional orange twist.