Dough: Mix and knead the ingredients for the dough to a soft consistency and let sit. Cover with a cotton towel for half an hour. Filling: Mix all ingredients well in a large bowl and set aside. Roll out the dough and cut into small squares/circles. Lay out the dough and place a spoonful of the filling in the center of each. Close the pastry, folding the edges inwards. Place on non-stick baking paper in a baking pan and coat with the egg yolk.