This deep cherry red Negroni-like aperitivo is equally tasty shaken and served straight-up – indeed that's how it was originally made, like a Shakerato. If served shaken, then a white head should cover the drink's surface, or it's not been shaken hard enough. The cocktail should then be consumed before the head fades. Either shaken or stirred, sweet vermouth/port predominates with Campari providing balances bitterness.
Created March 2018 by yours truly at the Cabinet Room, London, England.