To shape sourdough, turn the risen dough onto a lightly floured board, gather it into a loose round and let it rest for 20 to 30 minutes. Then flip it, fold the edges into the center, turn it seam side down and drag it toward you on the board until the surface is taut. That tension is what holds the loaf upright as it proofs and what lets it rise tall in the oven instead of spreading flat.
Shaping is where most home loaves are won or lost, and the surface you shape on matters more than most recipes admit.
Why shaping matters
After bulk fermentation, sourdough is soft, airy and slack. Left as it is, it would bake into a wide, low disc. Shaping organizes that dough: it pulls the outer layer tight around the gas inside, the way a drum skin is stretched over a frame. A well-shaped loaf holds its form in the proofing basket, opens cleanly where it is scored, and rises up rather than out.
Shaping happens in two stages, preshape and final shape, with a rest in between. Each has a job.
Stage one: preshape
The preshape gathers the dough into a rough round and starts building structure.
- Turn it out. Lightly flour the top of the dough in its container and the work surface. Tip the dough out so the floured side lands down.
- Divide, if needed. For two loaves, cut the dough in half with a bench knife and weigh the pieces so they match.
- Gather it. With a bench knife or floured hands, fold the edges of the dough into the center all the way around until it forms a loose ball.
- Turn and tuck. Flip it seam side down and, with the bench knife or cupped hands, push and turn it a few times on the board so the bottom catches and the top tightens slightly.
Keep the preshape gentle if the rest will be short and firmer if it will be long. The goal is a round that holds together, not a finished loaf.
The bench rest
Cover the preshaped rounds with a towel or an upturned bowl and leave them for 20 to 30 minutes. Some bakers stretch that from 10 to 45 minutes, depending on how firm the dough is and how tightly it was preshaped.
The rest relaxes the gluten. Shape too soon and the dough tears under tension. Rest too long and it spreads into a flat puddle that is hard to tighten. When the round has relaxed into a soft dome with smooth edges, it is ready.
Stage two: final shape for a boule
- Flour the top. Dust the top of the rested round lightly with flour. This side becomes the outside of the loaf.
- Flip it. Turn the round over onto the board so the floured side is down and the sticky side is up.
- Flatten gently. Press it into a rough disc without knocking out all the air.
- Fold to the center. Take the edge farthest from you, stretch it gently and fold it to the center. Turn the dough a little and repeat, working your way around until you have folded in every side, like closing a parcel.
- Turn it over. Flip the dough seam side down so the smooth floured side is on top.
- Drag to build tension. Cup your hands around the far side of the round and pull it toward you a few inches across the board. The bottom should stick slightly and the top should tighten. Turn it a quarter and repeat three or four times.
Stop when the surface is smooth and taut and the round holds a tall dome. If the skin starts to tear, you have gone far enough.
Why the surface matters
The drag in the final step only works if the bottom of the dough grips the board. Too much flour and the dough skates across without tightening. Too little and it sticks and tears.
Wood is forgiving here. A wooden surface holds a very thin film of flour without letting the dough slide freely, so it grips enough to build tension. If the dough is skating, brush the flour off that patch of board, or wipe it with a barely damp cloth and dry it, and try again. Polished stone and steel are cooler and slicker, which suits laminated doughs like croissants but can make the tension-building drag harder to control.
Into the basket
Dust a proofing basket generously with rice flour, which absorbs moisture without being absorbed into the dough, so the loaf releases cleanly. Lift the shaped round and place it upside down, seam side up, in the basket. Pinch the seam closed if it has opened.
From here the loaf proofs, either for an hour or two at room temperature or overnight in the refrigerator. A cold proof firms the dough and makes it easier to score.
A note on scoring
When the loaf is turned out to bake, a single confident cut with a razor or lame, about 1/2 inch deep and angled at roughly 30 to 45 degrees, gives the rising dough a place to open. A well-shaped loaf with good surface tension scores cleanly and opens into a raised ear along the cut. A loosely shaped one tends to tear wherever it pleases.
The board for shaping
Dividing, preshaping and the final drag all happen on the same surface, so a flat, steady board is worth having within reach. A WONAMU. bamboo cutting board is 12 by 9 inches, room enough to divide the dough and shape a single loaf. Scrape off stuck dough with a bench knife, wipe the board, and stand it on edge to dry.
Once the loaf is baked and cooled, the same kind of board takes the bread knife. A serrated bread knife on a bamboo board covers slicing a crusty loaf cleanly.
The short version
Preshape the dough into a loose round on a lightly floured board and rest it 20 to 30 minutes. Flip it, fold the edges to the center, turn it seam side down and drag it toward you until the surface is taut. Proof it seam side up in a basket dusted with rice flour, then score one confident cut before baking.
❋
WONAMU. makes a bamboo cutting board designed for daily prep, 12 × 9 inches, bamboo, with a perimeter juice groove. Available on Amazon.
Designed by nature.
