Pebre is most commonly used on bread. It is also used on meat, or when meat such as choripán is provided in a bread roll.
In Brazil, a similar sauce can be found by the name of Vinagrete (which is less hot than Pebre due to the lack of peppers in it). This sauce is one of the most popular sauces in Brazilian churrascadas.
The word pebre in Catalan means pepper of any type, in this case ají cultivars of chilli pepper. The origin of Pebre as a sauce in Chile dates to the arrival of Catalan engineers and highly skilled masons under the supervision of the Italian architect Joaquin Toesca, for the construction of the Tajamares de Santiago, the fluvial channels, river walls and bridges for the main river that intersects the city of Santiago, the Rio Mapocho (Mapocho River). Catalan workers made a simple sauce (salsa) with cilantro, oil, vinegar and salt, called Pebre for its main ingredient the ají. The term "pebre" refers, in Spain, to a sauce made of vinegar, pepper, saffron, clove, and other spices...