Piri piri or peri peri is a spicy sauce originating from either Angola or Mozambique. Variations of the sauce have been around for a long time, since the 15th century when the Portuguese settlers in Angola and Mozambique used bird's eye chili peppers and combined them with red wine vinegar, paprika, garlic, and other imports from Europe.
Nowadays, the sauce is equally popular in countries such as South Africa, Canada, and Australia. The most commonly found ingredients in piri-piri sauce are lemon, chili peppers, vinegar, garlic, paprika, and oil, but it's not uncommon to also see tarragon, citrus peel, oregano, and other ingredients.