They clock in at around 175,000 on the Scoville scale, which makes them about 20 times spicier than jalapeños. Originally, it was the Portuguese who cultivated piri piri peppers in the 1400s ...

Roosters Piri Piri, a UK franchise with nearly 40 locations, has operated for 30 years. Brothers Dylan and Luke Higgins run the Irish franchise, which began a decade ago in Douglas, Cork.