Sourdough Troubleshooting

Why Is My Sourdough Bread Flat?
9 Reasons Your Loaf Turned Into a Pancake

You fed the starter. You made the dough. You waited patiently. You shaped it. You scored it. Then you opened the oven and discovered... a pancake.

You carefully made your sourdough dough.

You followed the recipe.

You waited for fermentation.

You shaped what looked like a beautiful loaf.

You scored it.

You put it into the oven.

And then...

Before you start questioning every baking decision you've made since birth, take a breath.

A flat sourdough loaf is usually trying to tell you something.

It could be your starter.

It could be fermentation.

It could be hydration, flour, gluten development, shaping, proofing, or even your oven.

The good news? Your loaf didn't betray you for no reason.

Let's figure out what happened.

Why Is My Sourdough Bread Flat?

Flat sourdough bread is commonly caused by problems with starter strength, fermentation, proofing, hydration, gluten development, flour, shaping, or oven temperature.

The tricky part is that several of these factors can look very similar.

1. Your Starter Wasn't Strong Enough

Let's start with the engine behind your sourdough.

Your starter needs to be active and capable of fermenting the dough effectively.

If your starter is sluggish, weak, or hasn't been given enough time to become active after feeding, your dough may struggle to rise.

You might see very little expansion during fermentation and then wonder why the loaf didn't suddenly explode in the oven.

A strong, active starter is one of the most important foundations for reliable sourdough baking.

2. ⏰ You Under-Fermented the Dough

Your dough may simply not have fermented long enough.

During fermentation, yeast produces carbon dioxide, which gets trapped within the developing gluten network.

If fermentation is cut short, there may not be enough gas or structure to give your loaf the volume you're looking for.

This is one reason following a recipe's exact timeline can sometimes be misleading.

Fermentation changes with temperature, starter strength, flour, hydration, and many other factors.

3. You Over-Fermented the Dough

Yes.

Unfortunately, sourdough gives you the exact opposite problem too.

Fermentation that goes too far can weaken the dough's structure.

Instead of holding its shape, the dough may become extremely soft, slack, sticky, and difficult to handle.

You shape it.

It spreads.

You reshape it.

It spreads again.

Over-fermentation is a common reason dough loses its ability to stand tall.

4. 💧 Your Dough Was Too Wet

High-hydration dough can produce beautiful bread.

But more water can also make dough considerably harder to handle, especially if your flour isn't strong enough to support it.

If the dough spreads rather than holding its shape, your hydration may be part of the problem.

This doesn't mean high hydration is bad.

It means your hydration needs to make sense for your flour and your skill level.

5. Your Dough Didn't Develop Enough Gluten

Gluten is what helps give wheat dough the structure it needs to trap fermentation gases.

If your dough hasn't developed enough strength, it may struggle to hold onto those gases.

Appropriate mixing, stretching and folding, fermentation, and handling all contribute to dough strength.

Without enough structure, your loaf may spread instead of rising upward.

Basically: the bread needs a little backbone. 😂

6. 🌾 Your Flour Couldn't Support the Dough

Flour matters more than many beginners realize.

Different flours have different protein levels, absorption characteristics, and behavior in sourdough dough.

A recipe designed around a strong bread flour may behave very differently when made with another flour.

Whole-grain and freshly milled flours can also change dough behavior.

If you've recently changed flour and suddenly your loaves are flatter, that change deserves some attention.

7. You Over-Proofed the Loaf

Proofing is the final fermentation stage after shaping.

If the dough is left too long, the structure can become weakened and the loaf may not have enough strength left to spring dramatically in the oven.

You might notice that the dough feels extremely soft or fragile.

It may also spread when you turn it out.

8. 🔪 Your Scoring Didn't Give the Loaf a Good Direction to Expand

Scoring isn't just decoration.

Your cuts give expanding dough controlled areas where it can open during baking.

Poor scoring isn't necessarily going to turn a perfect loaf into a pancake, but the way you score can influence how the loaf opens.

A deep, intentional score can help direct expansion.

And yes, this is also the part where sourdough bakers discover that they suddenly want to carve wheat stalks into everything.

It's bread. But apparently now it's also art. 🎨🥖

9. Your Oven Wasn't Hot Enough

Oven spring depends on several things, and a properly heated oven is one of them.

If your oven or baking vessel isn't thoroughly preheated, you may not get the strong initial expansion you're expecting.

A hot baking environment helps the dough rapidly expand during the early stages of baking.

So if your loaf consistently looks great before baking but comes out disappointingly flat, your oven setup is worth investigating.

The Sourdough Pancake Scale

🔎 What Your Flat Loaf Is Trying to Tell You

Don't Change Everything at Once

This is one of the biggest mistakes you can make when troubleshooting sourdough.

If your loaf is flat, it's tempting to change your starter, flour, hydration, fermentation time, proofing time, shaping technique, and oven temperature all at once.

Don't.

Make one or two thoughtful changes at a time.

Pay attention to what happens.

Then adjust again if necessary.

Your Flat Loaf Isn't a Failure

It may not be the loaf you wanted.

It may not have the height, oven spring, or beautiful shape you imagined.

But it is giving you information.

Look at your starter. Look at fermentation. Look at the dough's strength. Look at hydration. Look at proofing. Look at your oven.

Then try again.

Because the next loaf might be the one that finally stands tall. 😎🥖

Still Trying to Figure Out Your Sourdough?

Flat bread is only one of the mysteries sourdough can throw at you. Explore our Sourdough Starter Troubleshooting guide for answers to common starter problems, from poor rising and bubbling to strange smells, hooch, thickness, and more.

Continue Your Sourdough Journey

Want to understand sourdough from starter to finished loaf? Explore the Squirrelly Girl Sourdough Academy for practical guides, helpful explanations, and the sourdough fundamentals every baker should know.

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