Place the previously sifted flour, a pinch of salt, oil and lukewarm water in a deep bowl. Stir all the ingredients with a wooden spoon to connect well. Add some water if needed. Knead the dough with your hand, then transfer it to a lightly floured surface and knead it some more. Form the dough into a ball, and then “throw” it on the surface about 30 to 50 times. This results in better gluten development.
Once the dough is soft and supple, form it again into a ball and place it on a plate, coat it with oil and wrap it well with cling film. Leave to rest for about 30 minutes.
Stretch the dough on a clean tablecloth with your fingers and palm and gently oil the edges. The dough must not be dry because it can crack. You can also use a roller pin, but it is recommended to stretch it with your hands.
Cut the spinach into strips and season with salt. Let it stand to release water. Mix all the ingredients for the filling well and let it rest.
Spread the filling on the stretched dough to 3/4 of the sheet and roll with a tablecloth.
Bake at 180 degrees for 40 min. They say burek is finer the greaser it is. So, when you roll it and place it in the pan - brush it with a mixture of oil and melted butter.