How to shape sourdough so the loaf holds its tension
To shape sourdough, preshape the bulk-fermented dough into a loose round, rest it 20–30 minutes, then shape it tight — drag-and-tuck for a boule, roll-and-seal for a batard. Knowing how to shape sourdough means building surface tension, not copying a shape from a video.
What shaping actually does
Shaping pulls the outside of the dough into a smooth, taut skin while the inside stays slack and gassy. That skin is a container: it holds the gas the starter produces instead of letting it escape sideways, so the loaf pushes up in the oven rather than out. Dough with no tension spreads into a disc no matter how good the fermentation was; dough pulled too tight tears and fights the blade when you score it. Everything below is one idea repeated: touch the dough as little as you can, and leave the outside tighter each time you do. Bubbles worth pressing out are the big irregular ones near the surface — crushing the whole dough throws away the fermentation you waited for.
Before you shape: bulk has to be finished properly
Most shaping problems are fermentation problems wearing a costume. If bulk ran long, the gluten has broken down and the dough won't hold tension no matter how well you handle it — it slumps out of the preshape and puddles in the basket. End bulk when the dough has risen roughly 30–50%, domes where it meets the side of the container, and jiggles as one mass; the bulk fermentation chart gives times by dough temperature. A few rounds of stretch and coil folds during bulk also mean the dough arrives at the bench already organized, so the final shape is shorter and gentler.
How to shape sourdough in three moves
1. Preshape
Scrape the dough onto a lightly floured counter with as little tearing as possible. Fold the far edge to the center, then each side, then roll it toward you into a rough round — or skip the folds and push the round in a circle with a bench knife. Stop while it's still loose: a preshape that holds a soft dome for about a minute is enough, and one you tighten fully will fight you at the final shape.
2. Bench rest, 20–30 minutes
The rest lets the gluten relax so the final shape can be tight without tearing. Cover the rounds with an inverted bowl or a towel so no dry skin forms. The dough is ready when it has spread a little and the edges look relaxed but the middle still domes. If it went completely flat in ten minutes, bulk went too far — shape it now, tighter than usual, and cut the final proof short.
Those intervals are what make one good loaf repeatable, and writing them down beats remembering. Sourdough Tracker, a sourdough baking companion app for iPhone, timestamps preshape, bench rest, and final shape so the intervals repeat loaf to loaf.
3. Final shape
Boule and batard part ways here. Both start the same: flip the rested round so the seam faces up, and keep the flour on the top of the dough, not under it. Sourdough shaping techniques all depend on grip between dough and bench, and a floured counter gives you none.
How to shape a boule: drag and tuck
With the seam side up, fold the four edges into the center like a parcel and pinch them together. Flip it seam-side down onto a bare, unfloured patch of counter.
Cup both hands behind the dough, fingertips against the bench, and drag the ball toward you a few inches. The friction pulls the underside taut and rolls it around to the top. Rotate about a quarter turn, drag again, repeat four to six times, and you'll feel it go from soft to springy. Pinch the seam underneath closed and stop — over-dragging thins the skin until it tears.
How to shape a batard: roll and seal
A batard is the oblong loaf, and its tension comes from a sealed seam rather than friction. Pat the seam-side-up dough into a rough rectangle with the long edge facing you, then fold the left third to the center and the right third over that.
Starting at the far edge, roll the dough toward you in two or three turns. After each turn, press the seam into the body of the dough with the heel of your hand — that seal is what keeps the loaf from unrolling in the oven. At the end, pinch the final seam closed along its whole length. Cup your hands over each end and roll gently outward to taper the points.
| Boule | Batard | |
|---|---|---|
| Tension comes from | dragging against a bare counter | sealing each roll |
| Seam | one pinched point underneath | a line down the length |
| Basket | round, ~9 in for about 1 kg of dough | oval of similar capacity |
| Typical score | cross, square, or several arcs | one long off-center slash for an ear |
| Easier when | hydration is high and the dough is slack | the dough is stiff enough to roll |
The tension test that tells you when to stop
Leave the shaped loaf on the bench for a minute and watch it. Enough tension: it holds its dome, and a light fingertip press at the side springs back slowly. Not enough: the outline widens while you look at it. Too much: the skin tears during shaping and a gas bubble escapes — rest it ten minutes and reshape gently.
What is a banneton, and what to use instead
A banneton — also called a brotform — is a proofing basket, usually coiled rattan or cane, that supports the loaf while it proofs and wicks moisture from the surface. The coils leave the ring pattern people recognize. A banneton alternative works as long as it supports the sides and holds flour: a mixing bowl lined with a floured lint-free tea towel (linen or smooth cotton, never terrycloth), a colander lined the same way for extra airflow, an oval casserole dish for a batard. Whatever you use, the loaf goes in seam-side up so the smooth face lands upward when turned out.
Fixing sourdough sticking to the banneton
Wheat flour hydrates against a damp dough surface and turns to paste, which is where most sticking starts. White rice flour doesn't form gluten and stays powdery much longer — use it straight or cut it 50/50 with wheat.
- Rub the flour into the coils or cloth with your palm instead of sprinkling it on top.
- Dust the dough's exposed surface too, not only the basket.
- Expect a new banneton to stick more; it seasons with use.
- Never wash a cane banneton with soap; brush it out dry and air-dry it fully before storing, or it can grow mold.
- A cold retard of 8–16 hours in the fridge firms the surface, so the loaf releases cleanly and scores better — see the cold retard proofing chart for timing.
- Turn the loaf out in one decisive flip; lifting slowly gives the dough time to grab.
FAQ
How long should the bench rest be?
Twenty to thirty minutes covers most doughs. Stiffer, lower-hydration dough can be ready at 15 minutes; slack, high-hydration dough may need the full 30. Judge by the dough — edges relaxed, center still domed.
Should the seam face up or down in the banneton?
Seam-side up, usually. The smooth face rests against the basket bottom, and when you invert the loaf onto the peel it lands smooth-side up, ready to score. Some bakers proof seam-side down and let the seam split on its own for a more rustic top.
Why does my dough spread out as soon as I shape it?
Almost always over-fermented bulk, sometimes hydration higher than the flour can carry. Degraded gluten can't hold a taut skin, so tension disappears within a minute. Shorten bulk on the next bake before changing anything about your shaping.
Can I reshape a loaf that came out badly?
Yes, once, right away. Rest it 10–15 minutes so the gluten relaxes, then repeat the final shape. Reshaping later in the proof, or more than once, costs enough gas that the loaf bakes noticeably tighter.
Free Sourdough tools
- Baker's Percentage CalculatorEnter flour and other ingredient weights to get baker's percentages, totals and an optional rescaled recipe for your target dough weight.
- Bulk Fermentation Time CalculatorEstimate a sourdough bulk fermentation window from dough temperature, starter percentage and starter activity. Use the result as a prompt to read the dough, not as a fixed finish time.
- Sourdough Bread Internal Temperature GuideChoose a loaf style and flour composition, then enter the measured center temperature to see the relevant sourdough bread internal temperature range and an interpretation.
- Sourdough Bread Timeline PlannerBuild a backwards-planned sourdough bread timeline from starter feeding through mixing, folds, bulk fermentation, shaping, proofing and baking.
- Sourdough Fermentation ChartUse your dough temperature, starter percentage and dough size to build a practical sourdough fermentation chart with a range rather than false precision.
- Sourdough Hydration CalculatorFind your true dough hydration, not just water divided by recipe flour. This calculator includes the flour and water already in your starter.
- Sourdough Proofing ChartEstimate a room-temperature or cold-proof window from proofing temperature and starter percentage, then check the dough's rise, shape and bubbles.
- Sourdough Starter Feeding Schedule PlannerBuild a dated sourdough starter feeding schedule with expected refreshes and a visual readiness window.
- Sourdough Starter Feeding CalculatorWork out how much to feed sourdough starter for a chosen amount or your next bake. Get grams of starter, flour and water, plus discard.
- Sourdough Starter Feeding Ratio CalculatorUse a feeding ratio and target hydration to calculate the grams of starter, flour and water to combine, plus total weight and discard.
- Sourdough Starter Grams to Cups ConverterHow many grams is 1 cup of sourdough starter? Use this approximate converter for cups, grams, hydration, and the flour and water your starter contains.
- Sourdough Starter Name GeneratorGenerate a shareable batch of sourdough starter names by vibe, flour type and starting letter. Re-roll or copy your favourites in one click.
- Sourdough Starter Peak Time EstimatorEstimate when a mature sourdough starter may peak from its feeding ratio, ambient temperature and feeding time, then check the visual cues that matter more than the clock.