Eggs are broken down with the salt. Add the water, the oil and yoghurt. Mix everything well. Mix the cornmeal, meal and baking powder and add to liquid mixture. Finally put the crumbled feta cheese. The whole was stirred until a homogeneous dough. Pan with a diameter of 30 cm stood with baking paper. The walls are coated with butter. Pour the dough and spread evenly. Bake in a preheated oven at 200C degrees, about 30 minutes, until golden.