In a laege bowl mix warm water and the yeast and let sit 10 min.
Add the egg, yoghurt, milk, sugar, vanilla, oil, stir well. Then sift the flour into the bowl and knead the dough, it should be very soft. We cover it with a transparent kitchen paper and let it rise until it doubles in volume.
On a surface sprinkled with flour we throw the dough and divide it into 6 parts.
Sprinkle the table with flour again and open them in small circle which we coat with butter and sugar and we place them on top of each other, sprinkle the last one with flour. Press them a little with hand and open a large circle like burek. Dividethe circle in 12 parts, open the middle of the triangles a little and fill them with nutella, chocolate or jam. Fold them and place them in a paper pan, coat them with butter, and wrap the pan in transparent paper and let them double in volume.
Bake at 180C (350F) for 10 or 15 minutes.
