Using a rubber spatula, mix together the flour, water, and yeast in a bowl until it forms a thick paste. Scrape the paste into a small, lightly oiled container, cover, and let it sit out for 1½ to 2 hours (See Note 1). Old dough should have doubled in volume.

In the bowl of a stand mixer, combine the old dough, water, oil, and salt. Squish the old dough with your hands to break it up in the water.

Add 1 cup of the flour and using the paddle attachment, mix on low speed until the dough looks like pancake batter. Next add the remaining flour and mix on low speed until fully incorporated. Cover the bowl with a kitchen towel and let the dough sit for 20 minutes (See Note 2).

Remove towel, attach the dough hook to the stand mixer and mix the dough on medium speed until the dough releases from the sides of the bowl without sticking and feels smooth to the touch, about 4 minutes.

Lightly grease an 8 cup bowl and place the dough inside. Cover the bowl with plastic wrap, and let it rest for 3 hours or until doubled in volume (See Note 3).

Dust a clean surface lightly with flour and place the dough on top. Cut the dough into 8 pieces about 3.5 ounces each.

Cup the palm of your hand over one portion at a time and move your hand in a circle. The friction from the counter will help form the dough into a ball.

Lightly oil a rimmed tray and place the dough on the tray, don't let dough balls touch. Cover with plastic wrap lightly coated with cooking spray or oil. Let rest for 1 hour (See Note 4).

Dust a clean surface lightly with flour. Lightly flour a rolling pin and roll each ball of dough into a thin rectangle about 8x12 inches. Work in batches and keep dough covered in between. OPTIONAL: once dough is rolled out, sprinkle sesame seeds on one side, and with rolling pin, press seeds into dough. These doesn’t have to look perfect.

Place a large cast-iron pan (or griddle over two burners) over medium-high heat for a few minutes or until a sprinkle of water instantly evaporates.

Place the dough in the pan or over the griddle. Cook for 1 minute or until puffed slightly and blistered. Turn over using tongs to cook the other side, no more than 30 seconds. For extra browning, flip it over for 30 more seconds.