The Porto Negroni is a bold and bitter cocktail that combines the flavors of Porto wine, Campari, and sweet vermouth. It is made by stirring equal parts Porto wine, Campari, and sweet vermouth with ice in a mixing glass. The mixture is then strained into a chilled glass and garnished with an orange twist. The Porto Negroni has a strong and complex flavor, with the bitterness of the Campari and the sweetness of the Porto wine balancing each other out. It is a perfect choice for those who enjoy strong and bold cocktails.