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A loaf can fall at several different moments: when it leaves a proofing basket, when a blade touches it, during baking, or after it comes out. Those moments provide valuable clues. Before changing the flour or yeast, identify when the structure failed and what the dough looked like just beforehand.

Collapse before the oven

Dough that has fermented too far may feel unusually fragile, with a very inflated surface that deflates under slight handling. The network has stretched beyond what it can comfortably support. Waiting longer for a more impressive rise can therefore produce a smaller loaf rather than a taller one.

If the dough is still in bulk fermentation and clearly advancing faster than planned, shape it sooner. If a shaped loaf is already very delicate, prepare to bake promptly and handle it carefully. An overproofed lean dough can sometimes be gently reshaped and given another brief rise, but the result is uncertain and the method is not suitable for every formula.

Spreading is not always collapse

A wet dough may spread because it lacks sufficient strength or because its shape has little surface tension. That is different from a previously inflated loaf suddenly falling. Note whether the dough ever held a rounded form. A dough that flows from the beginning needs a different investigation from one that was stable until the final minutes.

Check the water measurement, flour type, and development method. A flour substitution can make a familiar hydration difficult to handle. Additional folds earlier in fermentation may help an underdeveloped dough, while a loaf pan can provide support for a soft formula intended for pan baking. Neither solution repairs advanced overproofing.

Damage during transfer

A fully risen loaf deserves a gentle path into the oven. Dropping it from a height, dragging it off sticky fabric, or pressing hard while scoring can release gas. Prepare the loading surface before uncovering the dough. Use the dusting method recommended for the basket and avoid leaving damp spots that encourage sticking.

Scoring should open the skin without sawing deeply through the entire loaf. A dough that deflates dramatically under a normal shallow cut may already be too fragile. Consider proofing readiness as well as blade technique, especially if the same scoring motion worked on previous batches.

Falling after baking

Bread that looks tall in the oven but sinks while cooling may not have developed a sufficiently set interior. An underbaked center cannot reliably support the crust above it. This can happen when a hot oven colors the outside quickly while the middle remains wet.

Use several doneness cues and follow the recipe's baking guidance for the loaf size. If the crust darkens too early, a loose foil cover can protect it while the center finishes. A thermometer may offer additional evidence, but no single internal temperature replaces an understanding of the bread style and its intended crumb.

Use the timing of the failure to choose the next observation. If the loaf spreads as soon as it leaves the basket, photograph the dough's shape before scoring and note whether release was clean. If it stands well through loading but sinks after baking, record the center's doneness cues and cooling sequence instead. Those are different investigations even if both loaves end up short. Repeatedly adding flour to solve the final height can obscure the original problem. A reshape is, at most, a conditional option for suitable dough before baking, not a repair for a baked loaf with an unset center.

Build a useful record

Photograph the shaped dough before baking and the cooled cross section afterward. Note the proofing conditions, whether the loaf felt fragile, and when the falling began. Those details help distinguish excessive fermentation from inadequate baking more clearly than the description “dense bread.”

For the next attempt, adjust the most likely cause rather than simultaneously changing water, yeast, shaping, and oven heat. A collapsed loaf may still make good toast if it is fully baked and otherwise sound, but its greatest value can be the specific clue it provides for the next batch.