Early in the sixteenth century, chiles were transferred from Portuguese 
Brazil to their colony of Angola. These small, piquin-like chiles (which 
were probably Brazilian malaguetas) were called piri-piri 
(pepper-pepper) and became an integral part of the local cuisine. The 
sauce made from them was transferred back to Portugual, where it is a 
staple on dining tables--served with seafood, soups, and stews. Since 
the piri-piri chiles are not usually available, use chiles de árbol, 
cayenne chiles, chile piquins, or chiltepíns. Note: This recipe requires 
advance preparation.

Ingredients

1/2 cup chopped dried red chiles, seeds and stems removed
1 cup olive oil
1/4 cup cider vinegar
1 teaspoon salt

Instructions

Combine all ingredients in a shaker jar. Cover, shake well, and store at
room temperature for 24 hours. Shake well before each use. To make a
smooth sauce, blend this mixture in a food processor and thin slightly
with water or cider vinegar.