Peperoncini (or pepperoncini) are a variety of the species Capsicum annuum. While called peperoncini in American English, peppers of this particular kind, in Italy, are called friggitello (plural friggitelli) or more generally peperone (plural peperoni) like other sweet varieties of peppers, while the term peperoncini (singular peperoncino) is used for hotter varieties of chili peppers.