How to make
Knead the dough : mix the yeast with the sugar and add a little water for them to rise. Then add the egg white, yoghurt, vinegar, olive oil and make a mixture. Mix the sifted flour with the salt.
Add a little of the first mixture to the salt/flour and knead a smooth and elastic dough (I hit the dough about 50 times on the counter until it became very fluffy and threadlike). Allow to rise for 1 hour and shape as desired.
I formed it like this: I divided it into 4 balls. I rolled out each ball into a sheet and put them on top of each other. Between them I smeared turmeric mixed with olive oil and sprinkled olives (don't smear the final sheet). Cut it into 8 triangles.
Make a small incision in each triangle. Take the top of the triangle, stick it through the incision from the bottom and pull it up. Once you've formed them, arrange in a rectangular oven dish.
Spread with the beaten yolk, sprinkle it with seeds. Leave it to rise for another 30 min. and bake until ready.
