What is "piyaz"

Piyaz (, Persian:پیاز for "onion") is a kind of Turkish salad or meze that is made from any kind of dry beans with onion, parsley and sumac. In Antalya province of Turkey it is prepared differently from other regions with other ingredients like sesame oil. In Antalya, piyaz is not considered a salad but a main dish. In southern provinces like Adana, the word piyaz is used to refer to an onion and sumac salad. During the Ottoman period, piyaz was also made from artichoke, pea, chickpea, broad bean and potato, which were introduced to Turkey in the last quarter of the 19th century.