Free Guide · Troubleshooting

Sourdough bread too dense or gummy? Causes and fixes

A heavy, tight or sticky crumb has a handful of usual suspects. Start at the top of the list. The first match is usually the answer.

Dense and compact: the usual causes

  1. The starter was not active enough. If it had not clearly risen before you used it, the dough has little lifting power. Check the starter first, before you blame the recipe.
  2. The dough was under-fermented. It went into the oven before it had grown and gotten bubbly. The crumb stays tight with small holes.
  3. The dough was over-fermented. The gluten tired out and the loaf lost its lift, so the crumb turns heavy and sometimes has a dense band at the bottom.
  4. The dough was too stiff. Too little water for the flour gives a tight, compact crumb.

Gummy or “raw” crumb: the usual causes

  • You sliced it too early. The inside is still setting while it cools. Let the loaf cool completely before you cut it.
  • It was baked a little too short. The crust looks fine, but the middle is still wet. Bake a bit longer, or until the loaf sounds hollow when you tap the bottom.
  • The dough was very wet. High-water doughs need more bake time and more cooling time.
Cut sourdough loaf with an open, moist and even crumb
What a well-fermented, fully baked crumb looks like. Our own Bauernkruste, baked with the method from the kits.
Change one thing at a time. If you change the starter, the water and the bake time together, you will not know what fixed it. Fix the most likely cause first and bake again.

How to check

  • Starter: does it form a clear dome after feeding? If not, it is not ready to raise a loaf.
  • Dough before baking: press a floured finger gently into it. It should spring back slowly, not at once and not never.
  • Loaf after baking: it should feel light for its size and sound hollow when you tap the bottom.

The Starter Kit includes a full troubleshooting table (Module 5) that matches every symptom to its cause and its fix, plus the dome test and the poke test that make these checks easy.

Get the Starter Kit — €16

Frequently asked questions

Why is my sourdough bread dense?

The most common reasons are a starter that was not active enough and dough that was under- or over-fermented. Check the starter first.

Why is the inside of my sourdough bread gummy?

Usually the loaf was cut before it cooled or baked a little too short. Cool it completely and bake slightly longer next time.

Can I fix a gummy loaf?

If it is only a little gummy, slice it and toast the slices. It will taste much better. For the next loaf, bake longer and wait before slicing.

Is a dense crumb the same as an under-proofed loaf?

Often, but not always. A weak starter and over-fermented dough also give a heavy crumb. That is why the checks matter more than guessing.

Dough tastes fine but the bread is flat? See why sourdough bread spreads flat.

The guides teach the basics. The kits take you all the way.

Seven step-by-step modules from first mix to first loaf. The Starter Kit is where the craft begins.

Get the Starter Kit — €16