Which of the following is an example of a Vini Amari?

Vini Amari, or "bitter wines," are a category of fortified wines that are typically infused with various herbs, spices, and other botanicals, resulting in a distinctly bitter flavor profile. Campari is the quintessential example of a Vini Amari, as it is a bitter liqueur that achieves its unique taste through a secret blend of herbs and fruits, alongside the classic bittering agents. This distinct bitterness is a hallmark of the category, and Campari is often used in cocktails or enjoyed on its own, embodying the characteristics that define Vini Amari.

In contrast, the other options do not fit this classification. Martini Rossi is known for its Italian vermouth and is sweet or dry, but does not exhibit the strong bitter qualities typical of Vini Amari. Sherry is a type of fortified wine with its origins in Spain, emphasizing a different production method and flavor profile. Prosecco is a sparkling wine from Italy, primarily made from the Glera grape, and it is known for its fruity and floral notes rather than the herbal bitterness associated with Vini Amari. Therefore, Campari stands out in this context as the definitive example of a Vini Amari.