What is causing it
In rough order of likelihood.
- It was cut while warm. The commonest cause by a distance. Starch is still setting as a loaf cools, and cutting into it before it has finished leaves a crumb that reads as gummy. This is not a baking fault at all.
- It is under-baked. The centre never reached the temperature at which the starch fully gelatinises and the crumb sets. Common in large loaves, enriched doughs and anything baked in a deep tin.
- It was under-proved. The gluten structure never developed enough gas cells, so the crumb is dense and the moisture has nowhere to go.
- Too much liquid for the flour. A very wet dough with weak flour gives a wet crumb however long it bakes.
- Rye or wholemeal without adjustment. Both absorb water differently and both give a denser, moister crumb by nature — a rye loaf is meant to be close-textured.
Telling which one it is
Look at the loaf rather than guessing.
- Was it cut within an hour of coming out of the oven? If so, that is almost certainly the whole answer. Let the next one cool completely.
- Look at the gummy area. Under-baking is worst in the centre and improves towards the crust. Under-proving is even throughout and the crumb is tight everywhere.
- Look at the holes. Under-proved bread has few, small, uneven holes and a tight dense crumb. A properly proved loaf has an open irregular crumb even if it is under-baked.
- Press the base. An under-baked loaf sounds dull rather than hollow and the base is pale and soft.
- Check the rise. Did the dough roughly double before shaping, and did the shaped loaf feel airy and spring back slowly? If it barely moved, it was under-proved.
What to do with the loaf you have
None of this is a safety question — a gummy loaf is unpleasant, not unsafe.
- Put it back in the oven if it is under-baked and still warm. Twenty minutes at a moderate heat, out of the tin, directly on the shelf.
- Slice and toast it. Toasting drives off moisture and sets the starch, and gummy bread makes perfectly good toast.
- Cube and dry it into croutons or breadcrumbs, both of which are better made from imperfect bread anyway.
- Bread and butter pudding, panzanella or a soup thickener — all of them want bread that is not at its best.
- Do not slice the rest while warm. If part of the loaf is still uncut, leave it alone until it is completely cold.
What to change next time
- Cool it completely
- On a rack, with air underneath, for at least an hour and longer for a large loaf. This alone fixes most gummy bread.
- Bake it longer, and check the base
- Turn the loaf out and tap the bottom. A dull thud means it needs more time. A probe thermometer is the reliable answer if you have one.
- Prove until it is genuinely ready
- Not by the clock. A poked finger should leave a dent that fills back slowly and incompletely.
- Weigh the flour and the water
- Cup measures vary enormously, and a loaf that is too wet cannot be baked dry.
- Give enriched doughs longer
- Butter, egg and sugar all slow the bake and hold moisture. A brioche needs considerably more time than a plain white loaf.
Common questions
Is gummy bread safe to eat?
Yes. It is a texture fault rather than a safety one. Toast it, or use it in a pudding.
Can I re-bake a loaf the next day?
You can, and it helps under-baked bread. It will dry the crust considerably, so expect a harder loaf.
Why is my sourdough always slightly gummy?
Often cutting it too soon — sourdough needs longer to cool than a yeasted loaf. Very high hydration and an under-active starter are the other two causes.
Why is rye bread always dense?
Rye has little gluten-forming protein and holds a great deal of water. A close, moist crumb is correct for it rather than a fault.
How long should I really wait before cutting?
An hour for a small loaf and two or more for a large one. It is the single hardest instruction in baking to follow.
Try this next
- Dense bread if the crumb is tight rather than sticky
- Bread not rising the proving problem upstream of this one
- Starch gelatinisation what has to finish before the crumb sets
- Bread the method