Kefir pour into a bowl, take egg and beat in yogurt, salt, and now parts enter the flour and knead the dough.

Butter cut into thin slices and dip in flour.

Roll the dough into the reservoir, in the middle put a third of the butter, fold the envelope, well zasyplet region.

Roll out into a layer of sprinkled with flour, in the middle put the second part of the oil, and turn the envelope and semiplan edge, roll out the layer and put the last of the oil semiplan edges, and roll out, now just put in some layers and roll out into the reservoir, cut it into pieces, each piece wrapped with film and stored in the fridge in the freezer until you need it.

And the result of the making of this test...