For the discerning people who like some spice, not caustic, but flavourful.

Piri-Piri sauce, common in Portugal and found in many places with local Portuguese communities, is wonderful.

Wiki knows it : http://en.wikipedia.org/wiki/Peri-peri

For us far from there, the memories, a supermarket bottle, or maybe even homemade?

https://easyportugueserecipes.com/portuguese-homemade-hot-sauce-piri-piri/