Activate the yeast. Stir the dry yeast and sugar into the measured dough water at 82–86°F (28–30°C). Let stand for about 10 minutes. This follows the source’s lukewarm-water method; activity may be subtle at this temperature. Use fresh yeast within its date.
Mix and knead. Add the flour and mix on low for about 2 minutes. Add the salt and sunflower oil, then knead for 8–10 minutes, until elastic, soft, and slightly tacky. Follow your mixer’s dough-capacity limits; mix larger quantities in separate batches if needed. Avoid adding flour just to make the bowl completely clean.
Let the dough rise. Cover and leave at warm room temperature for about 60 minutes, until noticeably expanded and aerated. Allow longer in a cool room.
Heat the baking surface. During the first rise, heat the conventional oven to 480°F (250°C), with an inverted heavy, uncoated sheet pan or a baking steel on the lower-middle rack. Use equipment rated for this temperature and preheat the surface for at least 30 minutes. No parchment, wax paper, or ordinary silicone mat goes into this hot oven.
Divide and relax. Turn the dough onto a lightly flour-dusted work surface and gently divide into equal portions matching the selected flatbread yield. Each piece is about 151 g (5.3 oz) before baking, at every scale. Round loosely, cover, and rest for about 10 minutes.
Shape and proof. Press each round gently by hand to about 6–6¼ inches (15–16 cm) across. Keep the thickness even; do not roll out or forcefully deflate the dough. Make shallow indentations with damp fingertips, without cutting through or making a diamond pattern. Cover loosely on the lightly dusted work surface and proof for about 15 minutes.
Load safely. Gently lift a proofed round with a wide bench scraper onto a dry, lightly flour-dusted wooden peel or the flat back of a cool, rimless transfer pan. Give a small shake to confirm it slides freely; lift any sticky edge and dust just underneath. Transfer promptly, sliding the dough directly onto the preheated baking surface. Keep hands clear of hot metal, use dry oven mitts, and leave space between breads. Never try to pull stuck dough free over the hot oven.
Bake in batches. Bake for about 8–10 minutes per batch, until puffed, with lightly golden patches and a set, lightly colored underside. The crust should remain thin. Remove with a heat-safe peel or broad spatula and repeat, allowing the hot surface to recover between batches as needed. Keep waiting dough covered and use additional batches at larger yields.
Brush and soften. Lightly brush the hot breads with the separately measured finishing water, distributing it across the full selected yield. Loosely wrap each batch in a clean kitchen towel for about 10 minutes. The center should be set and porous, with no wet, gummy seam; return an underbaked bread to the oven rather than relying on the towel rest to finish it. Serve warm, or unwrap and cool completely on a rack before storing.