the.com/pepperoni

means A spicy, air-dried American salami made from cured pork and beef, most famous as the default topping on pizza.

from The name borrows the Italian 'peperoni,' meaning large bell peppers (from 'pepe,' pepper), even though the sausage itself isn't a traditional Italian product. Italian-American immigrant butchers in the early 1900s coined it for their own spicy pork-and-beef salami — likely naming it for its peppery, red-pepper-flecked heat rather than any peperoni vegetable. So the word crossed the ocean, but the sausage was born in American delis.