Pour the milk into a saucepan and place it on the fire. Bring the milk to a boil.
Add kefir to the milk in a thin stream and wait until curd flakes appear.
As soon as the flakes sink to the bottom of the pan and the whey becomes transparent, drain the mass into a colander previously covered with gauze. Salt the resulting mixture to taste.
Squeeze our mixture well, wrap it in cheesecloth and put a press on top. Leave the cheese for 10 hours, during which time all the excess whey will drain.
The cheese can be left in the refrigerator for a few days, this will add flavor. Then cut into pieces and serve.