peperoncino or

Peperoncino refers to small, thin chili peppers native to Central and South America that have become central to Italian and Mediterranean cuisine, particularly in southern Italy. The term encompasses several cultivars of Capsicum annuum, characterized by their diminutive size (typically 2-7 cm long), elongated shape, and intense pungency, ranging from 50,000 to 175,000 Scoville units depending on variety. The most common Italian varieties include peperoncino rosso (red), peperoncino giallo (yellow), and the particularly fiery peperoncino di Calabria, which holds protected designation of origin status. These peppers are typically bright red when fully mature, with thin walls and a sharp, lingering heat that builds gradually on the palate.

Peperoncino is used primarily as a seasoning agent rather than as a main ingredient, prized for delivering focused, clean heat without overwhelming underlying flavors. It appears fresh in Mediterranean salads, antipasti, and vegetable preparations, but is most commonly preserved through drying and crushing into flakes (peperoncino secco) or infusing into oil (olio di peperoncino) for year-round use. The dried form is essential in Italian dishes such as pasta all'aglio e olio, cacio e pepe variations, and southern Italian seafood preparations. It is also fermented into hot sauces and pastes. Peperoncino is rarely cooked for extended periods, as prolonged heat can render it bitter; instead, it is typically added toward the end of cooking or as a finishing element to preserve its sharp, fruity heat.