To make the dough: combine the yeast, sugar and 50-70g of warm milk, put on 30-40 minutes in a warm place to rise. Then add the salt, remaining warm milk, butter and flour. Knead the dough. Transfer to a large bowl, sprinkle with flour, cover with plastic wrap, put in a warm place for about an hour. When the dough has risen, ebonite it and again put in a warm place for 30 minutes. Fish season with salt and pepper. Roll out the dough thickness of 4-5mm and cut at an angle. On the middle put the chopped potatoes.

Then the cabbage, sliced onion half rings. Season with a little salt.

On the top of - fillet fish.

Close the pie, alternating the overlapping strips with two sides. The pan cover with pastry paper and transfer it on the cake. Brush lightly with beaten egg. Cover with a towel and let it rest for 15-20 minutes.

Bake in a preheated 180gr. the oven for 45-55 minutes.