Yeast dissolve in warm water, add 1 tsp sugar + 1 tablespoon flour. Put the sponge in a warm place for 1 hour. After it has increased significantly cap and settled proceed to kneading.
Pour the warm yogurt + the rest of the sugar, salt, beaten egg, mix well + add all the flour, knead and add flour, leaving a little on the mixing and podpis table. Now pour in the melted margarine.
Mix well, add flour if necessary.
The dough is very tender, not cool. Leave in a warm place for 1 hour to rise, do not forget to cover the dishes with a dough cloth.
Meanwhile, we are engaged in filling.
Boil potatoes in the usual way for mashed potatoes. Do not add salt.
With the finished potatoes drain all the water, leave for a moment on the stove (dry), you can now salt to taste, ceiling, add egg white. Add the prepared fried with onions mushrooms ( and there are fans of pickled mushrooms to add), chopped green onions and a pinch of dill. Mix well and leave to cool.
When the dough came, increased, became lush-begin to carve it. To divide into pieces (I made a large buns and I came up with 12 pieces), the pieces podcating in equal balls and spread out on the table, previously sprinkled it with flour, after 10 minutes, the balls roll in tortillas, spread apart at a distance.
Squeeze out, suitable in diameter form, the middle and grease whipped with sour cream yolk.
In the center put the filling, the ring of dough to wrap around the finger three times and spread the toppings around the edges.
Spread out on a baking sheet, which can be greased or covered with oiled parchment. Grease top with beaten egg yolk and give time for the dough for 10-15 minutes.
Send in the oven with t 180 degrees for 30 minutes. In any case, control the temperature of your oven.
After 30 minutes, I got these buns. Grease them with melted butter-abundantly!
Fragrant, nourishing, delicious buns!