Extinguish the baking soda in the yogurt. Knead a dough from the products gradually, initially put just a little bit of flour to obtain a slurry density. Allow to rest for 15 minutes then add in more flour, knead until you get a very soft dough.
Leave to rest for 15 more minutes. Divide the dough into 2 balls. Stretch out each ball into a long rectangle, brush them with a little oil and sprinkle with grated feta cheese, wrap them individually, and then form a loaf by putting them together.
Put them in a greased baking dish (about 10″ (25 cm) diameter) and put it to rise and double in volume in a warm place, for about 2 hours. You can also use a low oven. Smear the risen loaf with a little oil on top and put it to bake until ready.
Check it with a stick. Once baked, wrap it in a towel.