Prepare the sourdough. To do this in a bowl, mix warm milk, sugar, flour and yeast. Mix well and leave in a warm place for 30 minutes. First forms a cap, which then will begin to fall and pop the bubbles - the dough is ripe. In a separate bowl, mix muffin: sugar, eggs, milk, soft butter. Stir well to components connected. Then, in the pastry sift the flour with vanilla sugar and salt. Add the yeast mixture and knead the dough. In order for the dough not to score with flour and it doesn't stick to hands, it should be put on a work surface, floured hands grease with vegetable oil and knead on the table. The dough cover and leave in a warm place for 1 hour. After the dough increase in volume in 2 times, you can begin the formation of the product.

The working surface lightly sprinkled with flour, put the dough, punch down and divide it into 3 unequal parts. Out a small piece to roll out a round cake with a diameter of 15 cm In the center put the Apple filling. Apple filling is prepared simply. For this apples peel and core, cut into slices, sprinkle with sugar and sprinkle with lemon juice, mix well.

Seal the edges, forming a bun.

From the second part to roll out a rectangular layer, about 35-40 cm long and 12 cm wide, in the middle put the Apple filling. Close up of the edge, forming a roll.

Round shape, with a diameter of 24 cm covered with baking paper ( you can grease with vegetable oil), I didn't do it. In the middle of the form is to put the bun, seam side down, around the bun loaf. From the remaining dough and roll out a rectangular layer, turn it into a log and cut into pieces 1 cm wide, spread in a circle as shown in the photo. The rest of the test is collected in lump, roll out and cut the leaves, strip for additional decoration of the cake.

Whisk egg yolk and lubricates the surface of the cake.

Leave for 15 minutes. Bake in a preheated oven at a temperature of 180-190 degrees for 35-40 minutes