Kashk is a Persian dairy product that is made from drained yogurt. It is made and used in many Central Asian cuisines like Iranian, Turkish and Mongolian.
The main ingredients are just salt and yogurt. It is a type of cheese that can be dissolved and eaten as yogurt. The butter is removed from the milk and what remains is “doogh”. That’s what Khask is made from.
Khask is otherwise eaten with dishes like Ash Reshteh, which is added as a dollop on the soup.