Why Did My First Sourdough Loaf Turn Out Flat?

You waited, you folded, you hoped — and out came a disc. Asking why did my first sourdough loaf turn out flat is almost a rite of passage. A flat first loaf rarely means you failed. It usually points to one small moment in the process where the dough ran out of lift, and that moment is fixable next bake.

The full walk-through, from feeding your starter to pulling a tall loaf from the oven, is in our Starter to Loaf guide — here is how to read your flat loaf and change the right thing.

What a flat loaf is trying to tell you

• Your starter may not have been at its peak. Dough mixed with a starter that was still sleepy, or already hungry and collapsing, simply does not get enough gas to lift a loaf. Next time, feed it and wait until it has risen well, looks bubbly all through, has a slightly domed top, and smells pleasantly tangy — then mix.
• The rise may have been cut short, or left too long. Shaping too early leaves too little gas built up. Leaving it too long lets the dough go slack and spread sideways instead of up. Watch the dough, not the clock: shape when it looks puffier, feels airy, and has grown noticeably, with a smooth, domed surface.
• Shaping may have been too gentle. A loaf rises up when its surface is pulled taut. Fold the edges into the middle, flip the dough over, and gently pull it toward you across the counter a few times so the top tightens into a smooth skin. That tension is what holds the round shape in a hot oven.
• The crust may have set before the loaf could expand. Bake in a preheated covered pot for the first part of the bake so trapped steam keeps the crust soft while the loaf springs upward. Uncover it only after it has risen, so the crust can turn deep golden and crisp.

Change one thing at a time and your second loaf will already stand taller. The Sourdough Academy hub has the feeding and readiness guides that make each of these checks easier to judge.

Bake a Taller Loaf — Get Your Starter →

Walk through the full Starter to Loaf guide →

Questions? Just message us — we'll get back to you, we promise. No AI chatbots here, just real people who bake sourdough every day.

Is a flat loaf still good to eat?

Yes. Slice it thin and toast it — a flat loaf still has all that tangy flavour, makes wonderful bruschetta and croutons, and tells you exactly what to adjust next time.

Should I change my recipe after one flat loaf?

Not yet. Keep the same recipe and fix the timing first: a peak starter, a dough shaped at the right moment, and a taut shape solve most flat first loaves.