barberry is the correct name,as seen in the text as wel Zereshk Harvesting Berberis in Birjand, Iran vulgaris,
which are widely cultivated in Iran. Iran is the largest producer of zereshk
and saffron in the world. Zereshk and saffron are produced on the same land and
the harvest is at the same time. 
Zereshk is the Persian name for the dried fruit of Berberis
The South Khorasan province in Iran is the main area
of zereshk and saffron production in the world. Barberry cultivation in Iran is
concentrated in the South Khorasan province, especially around Birjand and
Qaen. About 85% of production is in Qaen and about 15% in Birjand. According to
evidence the cultivation of seedless barberry in South Khorasan goes back to
two hundred years ago.
Zereshk is widely used in cooking, imparting a tart
flavor to chicken dishes. It is usually cooked with rice, called zereshk
poloRecipe, and provides a nice meal with chicken. Zereshk jamphoto, zereshk
juicephoto, and zereshk fruit rollsphoto are also produced in Iran.
In colloquial Persian, zereshk is used as a term for
showing dissent or disagreement, similar to the usage of "blowing a
raspberry" in English. Although not a vulgar term in that context, it is
not used in polite speech.
