What is "mataz"

Mataz are dumplings in Circassian and some other Caucasian cuisines, closely related to mantı, and other Asian dumplings, such as buuz, baozi, jiaozi, mandu, and momo. Mataz dumplings typically consist of a spiced meat mixture, usually lamb or ground beef, with greens and onions, put in a dough wrapper, either boiled or steamed. Mushrooms, potatoes, or cheese may be used in place of meat.