Echinophora sibthorpiana, commonly known as Tarhana herb or Turkish pickling herb (Turkish çörtük), is a biennial or perennial herb native to southeastern Europe, Crimea, western and Central Asia, and northeastern Afghanistan.
It is sometimes used as a flavoring in tarhana and in pickles. It may also improve the fermentation of tarhana.
The primary constituents of its essential oil are ô-3-carene, methyleugenol, and ñ-phellandrene.
Some authors indicate that Hippomarathrum cristatum is the "tarhana herb".