Syrniki or syrnyky are fried Eastern Slavic quark pancakes. They are a part of Belarusian, Russian, Ukrainian, Latvian, Lithuanian (varškėčiai) and Serbian cuisine. In Russia, they are also known as tvorozhniki (творо́жники).

Quark or quarg is a type of fresh dairy product made from milk. The milk is soured, usually by adding lactic acid bacteria cultures, and strained once the desired curdling is achieved. It can be classified as fresh acid-set cheese. Traditional quark can be made without rennet, but in modern dairies small quantities of rennet are typically added. It is soft, white and unaged, and usually has no salt added.