Sangak is a whole wheat Iranian flatbread baked directly on hot river stones, which give it a distinctive dimpled texture and crispy underside. The dough itself is remarkably simple: whole wheat flour, water, salt, and a leavening agent. What makes sangak unique is the technique, not the ingredients. Here’s how to recreate it at home.
What Makes Sangak Different
The name “sangak” comes from the Persian word for “little stones.” In Iranian bakeries, a long slab of wet dough is stretched and laid directly onto a bed of hot river pebbles inside a large oven running at 315 to 370°C (600 to 700°F). When the wet dough hits those superheated stones, several things happen at once: steam bursts from the contact points, forming a thin crispy crust on the bottom. The intense heat triggers rapid browning, developing complex, nutty flavors. And the pebbles press into the dough, creating the bread’s signature dimples and craters.
Those indentations aren’t just decorative. They help the bread cook evenly and create natural pockets that hold toppings like sesame seeds or poppy seeds. The stones also radiate heat consistently, cooking the bread from the bottom up, which is essential for a flatbread this thin.
Ingredients and Ratios
Traditional sangak uses 100% whole wheat flour at 100% hydration, meaning equal weights of flour and water. This creates a very wet, loose dough that’s closer to a thick batter than a typical bread dough. That high water content is intentional: it produces steam when it hits the hot stones and keeps the interior soft while the crust crisps.
For one large flatbread (roughly the size of a half sheet pan), you’ll need:
- 250g whole wheat flour (stone-ground works best for flavor and texture)
- 250g water (warm, around 35°C / 95°F)
- 5g salt (about 1 teaspoon)
- Active sourdough starter or 3g instant yeast
If using a sourdough starter, add about 75g of active starter and reduce the flour and water each by roughly 35g to keep the ratio balanced. Sourdough is the traditional leavening method and gives the bread a mild tang that pairs well with the whole wheat flavor. Instant yeast works fine as a shortcut.
Mixing and Fermenting the Dough
Combine the flour, water, salt, and your leavening in a large bowl. Stir until everything is incorporated. Don’t expect this to look like normal bread dough. It will be sticky, shaggy, and pourable. That’s correct.
Cover the bowl and let it ferment. With instant yeast at room temperature (around 21°C / 70°F), this takes about 2 hours. You’re looking for the dough to roughly double in volume and develop visible bubbles on the surface. With sourdough starter, expect 4 to 8 hours depending on how active your starter is and the temperature of your kitchen. A warmer room speeds things up. The dough is ready when it looks bubbly and airy throughout, with a slightly sour smell.
You can also mix the dough in the evening and let it ferment overnight in the refrigerator. Cold fermentation over 8 to 12 hours develops more complex flavor and makes the dough easier to handle the next day. Pull it out about an hour before baking to take the chill off.
Setting Up the Pebble Tray
This is the part that separates sangak from every other flatbread. You have three options for your baking surface, ranging from most authentic to most practical.
Option 1: River Stones on a Sheet Pan
Buy smooth, flat river stones from a garden center or craft store. You want stones roughly 2 to 4 cm across (about the size of a large grape or small walnut). Avoid porous stones like limestone, which can crack or explode from trapped moisture at high heat. Smooth, rounded river rocks work because they’ve already been naturally tempered by water erosion.
Wash the stones thoroughly and let them dry completely. Spread them in a single layer on a rimmed half sheet pan, packing them closely together so there are minimal gaps. Lightly oil the stones before your first bake. Place the pan on the middle rack of your oven and preheat to 230 to 260°C (450 to 500°F) for at least 30 minutes. The stones need time to absorb and store heat evenly.
Option 2: Baking Steel or Pizza Stone
If the pebble setup feels too adventurous, a preheated baking steel or thick pizza stone produces excellent sangak. You won’t get the dimpled bottom, but the flavor and texture of the bread itself will be very close. Preheat the steel or stone at your oven’s highest setting for 30 to 45 minutes.
Option 3: Inverted Sheet Pan
In a pinch, flip a heavy sheet pan upside down, preheat it, and bake on that. It won’t hold heat as well as stone or steel, but it works.
Shaping and Baking
Sangak dough is too wet to shape by hand in the traditional sense. Instead, you’re going to pour and spread it.
Wet your hands and forearms generously. Scoop the dough out of the bowl and onto a large piece of parchment paper. Using wet fingers, gently stretch and press the dough into a rough oval or rectangle, about 30 by 40 cm and no more than 1 cm thick. Work quickly and don’t worry about making it perfectly even. Thin spots and thick spots are part of sangak’s character: the thin areas get extra crispy while the thicker parts stay chewy.
If you want toppings, now is the time. Press sesame seeds, poppy seeds, or nigella seeds into the surface. A light sprinkle of coarse salt works well too.
Transfer the dough (on its parchment) onto the preheated stones, steel, or pan. If using river stones, you can slide the dough directly off the parchment and onto the hot rocks for a more authentic result, but the parchment method is safer and still produces good dimpling as the dough sags between the stones.
Bake for 8 to 12 minutes. The bread is done when the top looks dry and lightly golden and the bottom has developed deep brown spots where it contacted the hot surface. If using stones, the bottom will have a beautiful pattern of crispy ridges and soft craters.
Cooling and Storing
Pull the bread out carefully using tongs or a large spatula. If baked on stones, some pebbles may stick to the bottom. Let the bread cool for a minute, then gently pick off any stones that clung on. Place the bread on a wire rack for just a few minutes. Sangak is best eaten warm, within an hour of baking.
To store it, wrap cooled sangak tightly in a clean kitchen towel, then in a plastic bag. It stays good at room temperature for about a day. To refresh day-old sangak, sprinkle a few drops of water on the surface and warm it in a hot oven for 2 to 3 minutes. It freezes well for up to a month: wrap individual pieces in foil, freeze flat, and reheat directly from frozen in a hot oven for 5 minutes.
Nutritional Profile
Because sangak is made from 100% whole wheat flour, it carries more fiber and minerals than white flour flatbreads. A 100g serving contains about 4.1 grams of dietary fiber. Its glycemic index sits at around 82, which is classified as high GI, similar to other Iranian flatbreads like taftoon (79) and barbari (99). Lavash comes in slightly lower at 72. If you’re watching blood sugar, pairing sangak with protein, fat, or vegetables (as it’s traditionally served) helps moderate the glucose response.
Troubleshooting Common Problems
If your dough is too runny to spread, your flour may have lower protein content than expected. Add a tablespoon or two of flour and let it rest for 15 minutes. The gluten will hydrate and give you slightly more structure. If the dough tears when you try to stretch it, your hands aren’t wet enough, or you’re working too aggressively. Keep your hands dripping wet and use gentle pressure.
If the bottom burns before the top cooks, your oven is too hot or your stones are too close to the heating element. Move the rack up one position, or reduce the temperature by 15°C. If the bread comes out pale and soft without any crispness, the stones or steel didn’t preheat long enough. Give them a full 30 to 45 minutes at maximum temperature before baking. The thermal mass of the baking surface is what makes sangak work.