Delicious warming soup based on matsun. In Armenia, it is often served hot right in a mug.
Boil Dzavar in enough water for 30 minutes, until tender.
Rub the egg with flour.
In a saucepan with a thick bottom, mix matsun and sour cream, add the egg mass, mix until smooth, pour in cold water, mix again, add Dzavar, salt to taste.
Place over medium heat and bring to a boil, stirring constantly. Then reduce the heat and cook for another 20 minutes, also stirring.
Turn off the heat, add finely chopped cilantro (mint if desired). Serve hot. But you can do it in the cold.
If desired, you can also fry 1 finely chopped onion in melted butter and add to the soup when serving.