How to make
Beat the yoghurt with the baking soda and baking powder in a bowl, leave it to bubble, add the flour, eggs and oil.
Lay out a sheet, put 1 tbsp of the mixture, a 2nd sheet on top, 2 tbsp of mixture, crumble on feta cheese, roll it up lengthwise and then into a spiral.
Repeat for all of the sheets. Bake at 360°F (180 °C).