📷 Closely related photo — Photo: Kolforn (Kolforn) I'd appreciate if you could mail me (Kolforn@gmail.com) if you want to use this picture out of the Wik / Wikimedia Commons · CC BY-SA 4.0
It's often called 'Frango da Guia' nationwide, after one small Algarve town that still holds an annual festival dedicated entirely to it.
A whole chicken is butterflied, marinated and basted with a fiery piri-piri chili sauce, then char-grilled over open coals until the skin blisters. Sold at roadside grills and market stands across the Algarve, especially around the town of Guia.
Why it's made this way: Portuguese settlers returning from Angola and Mozambique in the 1960s and after 1974 brought African bird's-eye chili and grilling techniques with them, and the Algarve town of Guia became the dish's unofficial capital, with a restaurant there claiming to have served it since 1964.