This tiny place near Rossio has been serving nuclear-level piri-piri chicken since 1960. The locals line up outside for a reason. Quarter chicken is 4.50 EUR and will destroy you if you ask for extra spicy.

Located at Travessa de Santo Antão 11. Don't confuse it with the fancy Bonjardim restaurant next door - you want the cramped takeaway place. Order your spice level carefully because Portuguese spicy is serious business.