How to make
Extinguish the baking soda in the yoghurt. Add the yoghurt, egg and feta cheese to the flour.
Form balls the size of a medium-sized egg from the dough.
Make an opening in each ball and put a piece of butter in it.
Arrange them in an oiled (or covered with baking paper) tray and bake at 390°F (200 °C) until golden.
