Troubleshooting
Sourdough Loaf Too Small or Dense: How to Get More Volume
A small, tight loaf with poor rise points to a weak starter or under-fermentation. Here's how to get a tall, airy loaf.
A small, dense sourdough loaf with little oven spring is almost always caused by a weak starter or underfermentation — the dough never built or trapped enough gas. Fix it with a stronger starter, a longer or warmer bulk, and good shaping tension.
Why the loaf is small
| Cause | Fix |
|---|---|
| Weak starter | Rebuild with daily feeds |
| Underfermented | Longer/warmer bulk |
| Poor shaping | Build surface tension |
| Too little starter | Use 15–20% |
| Low steam in oven | Add steam for spring |
| Old flour | Use fresh, high-protein flour |
Fix 1: A strong starter
This is the number one cause. Your starter should reliably double within 4–8 hours of feeding and pass the float test. If it doesn't, bake nothing until you've rebuilt it with several daily 1:5:5 feedings at warm room temperature.
Fix 2: Full fermentation
Underfermented dough can't rise — there isn't enough gas. Let bulk go to 50–75% rise, watching the dough, not the clock. In a cool kitchen this may take 6–10 hours. Warm the dough to 75–78°F to speed it up.
Fix 3: Shaping tension
A loose loaf spreads instead of rising up. Build a tight skin during final shaping so the dough rises tall rather than flat. Drag it across the counter to build surface tension.
Fix 4: Oven spring
Bake in a preheated Dutch oven or with steam. Steam keeps the crust soft so the loaf can expand fully in the first 15 minutes. A blazing hot oven (475–500°F to start) maximizes spring.
Frequently asked questions
Why is my loaf dense even though it rose during bulk?
Likely degassed during shaping or underbaked. Shape gently and bake to temperature.
How much should a loaf rise?
A well-fermented loaf nearly doubles overall (bulk + oven spring) and has an open, even crumb.
Will more starter make a bigger loaf?
More starter speeds fermentation but won't fix weak structure. A strong starter at 15–20% is better than lots of weak starter.
Volume is the visible reward for a strong starter and full fermentation. SourdoughAI tracks starter strength and bulk progress so your loaves rise tall and consistent.