STIR all ingredients with ice and strain into ice-filled glass.
Orange zest twist
A Negroni with hazelnut liqueur. Some will ask: why? Negroni-loving drinkers of hazelnut liqueur might ask: why not?
Created in 2012 and named for its inventor, the flamboyant, music-loving whisky ambassador - a man who likes a Negroni, and, it would appear, hazelnut liqueur.