Stir and strain into rocks glass with fresh ice. Garnish: Orange Twist
A google search for "Montenegroni Cocktail" returns a handful of cocktails by the same name. The above seems to be the most prevalent, along with a version that subs the Montenegro for the Campari, ups the gin slightly, and cuts the sweet vermouth. Something like 1.25 gin, 1 mont., .75 vermouth. In my opinion, this makes a significantly inferior drink.