Is your sourdough bread not turning out the way you had hoped? Does something go wrong during the process?
If your dough isn’t doing what it should, this sourdough bread troubleshooting guide is for you. Read through this and it will help you decipher what went wrong.
I have much of this information written in various areas of the blog already, but I think a dedicated post of sourdough bread troubleshooting is best.
I want to talk through the process of bread making and all the important parts that I have found play the biggest part in a good loaf of sourdough. I’ve only included the crucial steps, so it shouldn’t be too overwhelming.
It’s hard to write an exact recipe with timings and temperatures as every environment is so different and there are so many variables. I believe it’s best to understand what is actually happening while the sourdough is being made, and what is happening in your sourdough starter.
Once you understand that you can tailor things to suit your individual spaces and loaves.
You can use this blog as a guide for better understanding of the sourdough process and what is happening inside your loaf – but also as a way to delve into specific issues you may be experiencing.
At the bottom of this post is a list of Sourdough Bread Troubleshooting Guide FAQs.
Read on for an in depth guide on each stage of sourdough:
- Sourdough Starter
- Bulk Ferment
- Shaping & Cold proofing
- Underproofed & Overproofed Bread
So, let’s start with the key part of any sourdough loaf: The starter.
This Sourdough Bread Troubleshooting Guide isn’t going to show the recipe to create the starter. It is going to assume you’ve already got one set up.
However, even if you have an active starter already made, how it’s maintained is actually very important to the working and development of your bread dough.
A starter is a collection of yeast and bacteria that feed on flour. The yeast are responsible for the rise in the bread, whilst the bacteria create the sour taste and ferment the bread. The bacteria produce both lactic acid and acetic acid.
It is very important to establish if your starter is active enough to bake bread in the first place. In a starter, the yeast are the slowest to grow and colonise the starter. Even if your starter is full of bubbles, that doesn’t particularly mean the yeast colony is big enough yet.
The bubbles can be made by both the yeast and the bacteria that let off gas.
When I first start a starter from scratch I will feed it 1:1:1 daily, equal parts starter, flour and water in weight. This is introducing a small amount of fresh flour and water each day that the yeast and bacteria can consume while they establish themselves.
It’s important you measure this in weight and not volume. Water is much heavier than flour, so if you measure equal spoons or cups instead of grams, your water balance will be way off.
As the starter begins doubling quickly (within 5-6 hours) I will begin feeding 1:1:1 twice daily. These constant feedings are what help to establish the yeast colony.
To check if the starter is ready to bake with, I like to perform a little test. To do this I will feed the starter 1:2:2. This means 1 part starter and 2 parts flour and 2 parts water. I want to see if the yeast can colonise this extra fresh flour and water fast enough before the bacteria create too much acid. (An overly acidic starter can be problematic and I’ll address this further below).
In general, at a room temperature of around 20°C, if the starter is properly ready, I would expect it to easily double, even triple, within 6 hours. If it takes longer than this, your yeast colony may not be established enough yet. They are not going to have the strength to raise your bread.
Continue with the twice daily feedings until it is established.
ACID IN THE STARTER
There is always acid in a sourdough starter, as it is the byproduct of the bacteria. However, too much acid in your starter can be very troublesome when it comes to working the dough.
If you use an overly acidic starter, it can break down the proteins in the gluten so much that they don’t hold together. The dough becomes sloppy and unworkable.
The dough not holding shape and spreading out like there is too much liquid is one of the most common issues I hear. The most likely culprit for this is the starter. If this sounds familiar to you, please read on.
The longer the time between the feeding of your starter, the more acid that accumulates in your starter. A starter that was fed 6 hours ago at 1:2:2 will have less acid than one fed 10 hours ago at the same ratio.
Also, the higher the ratio of seed starter used in the feeding, the more acid there is.
Feeding your starter at a ratio 1:1:1 brings a large amount of seed starter into the new mix. This means that this newly mixed starter will rise quickly because the yeast and bacteria don’t have a large amount of flour to inoculate.
This is fine if the starter is refreshed multiple times daily, and used before the starter peaks and collapses, however I rarely use this ratio.
I much prefer a 1:2:2 or 1:3:3 ratio. This brings a small amount of seed starter into the fresh mix and there is plenty of food for the yeast and bacteria.
This gives a slower rise, so you have more time to use it before it peaks. This means there is more time before the food runs out and too much acid accumulates. However, as mentioned above, if your starter takes longer than 6 hours to double at 1:2:2, it may not be quite ready.
SO, WHEN DO YOU USE THE STARTER?
If you regularly refresh your starter, and keep the seed starter amount small, then you’ve got quite a window of opportunity to use it for bread.
It has to at least double, or even triple.
However, you should use it before it passes its peak. The peak is when the starter has done all the rising it can. There is no food left, so it starts to collapse. A peaked, collapsed starter is too exhausted to bake with, and too much acid has accumulated.
Acidic starters like this are great in discard recipes such as pancakes. That’s because these recipes rely on the acid the bacteria produces. It reacts with the baking soda to give the rise.
How quickly the starter rises will depend on the maturity of your starter, how much seed starter was initially used, and the temperature of your room.
My Top Tips for the best starter health and success:
- Weigh out your quantities when feeding your starter and use ratios depending on how soon you are wanting to make bread with your starter.
- Take note of how long it takes for your starter to double and then reach its peak – this will give you an idea on the window you have to use your starter.
- Don’t be afraid to keep your starter in the fridge in between uses – just make sure you feed it beforehand.
When it comes to a sourdough bread recipe, I think the actual amounts of water and flour are the least important. In fact, I make bread by eye a lot and just tip in flour and water and mix it until it feels right.
This means some days it is really wet, other days not so much. The point is, don’t get too hung up on the amount of water and flour in the actual recipe. Sourdough recipes can range in hydration, usually between 65-80%. If you’ve got a good starter with a low acid load, it can handle a wet dough.
The type of flour makes a difference though. I think when just starting out the sourdough journey, using a strong white flour with a protein level between 10.5-11% is the easiest. It can help you get used to gauging the dough. Once I had a few loaves like that under my belt, I let the experimenting with different flours begin.
When introducing different flours such as spelt, rye, wholemeal, etc, it helps to start with small amounts and work your way up. 10-15% of the total flour amount is a good place to start.
A long autolyse helps too. This is the mixing of the main bread flour and the water to create a shaggy dough. This hydrates the gluten and makes a real extensible dough. I like to start my autolyse at the same time I feed my starter, this gives it plenty of time to hydrate.
THE BULK FERMENT
The bulk ferment is the term for the fermenting and proofing the dough will do at room temperature. Usually, there is some folding, or kneading of the dough that happens at this stage at the same time.
In my recipe, I coil fold the dough for 3 hours, and then leave it to ferment further until it has reached the ideal proofed stage. I always use wet hands when I am folding my dough as it stops it sticking to my hands. My dough is always sticky and wet, even if the videos I have of my folding don’t show that fully. However I build up the structure and elasticity in the dough so it holds together.
It is normal for the bread dough to spread back out a bit after folding, especially with doughs that have a higher hydration. However, you should feel a difference in texture as it develops.
Folding and building the structure in the bread is important for an open crumb. You need to develop the glutens. A coil fold isn’t the only way to do this, there are many kneading or folding methods. I find a coil fold the easiest and I appreciate the smooth top it gives the dough once folded. I can easily see the bubbles form in it as the dough proofs.
However, if your starter isn’t ready or it’s exhausted and acidic, your folding won’t build the structure you need. If you find your dough is really liquid after the first few sets of folds and doesn’t strengthen, I would reassess the starter.
The dough needs to proof for long enough if you want a light and open crumb. You need to give the yeast time to work through the sugars in the dough. As they do, they release carbon dioxide. The gluten structure that was built up during the autolyse and the folding will hold this gas in little pockets. This gives the rise in the dough.
Sourdough rising is so much slower than commercial yeast so it might look like there is nothing happening during the bulk ferment, but there definitely is.
It’s hard to know exactly how long it needs or when it has proofed enough (or too much!) but this is something that can be learned with practice.
WHAT TO LOOK FOR IN THE BULK FERMENT
In my usual sourdough loaf, I look for my dough to bulk out by about 50%. That doesn’t mean it doubles, it’s just fuller by half the amount. I take a photo of my dough at the beginning and then compare it at the end.
After folding and the dough has sat a few hours proofing, give it a prod with a wet finger. It should leave an indent that fills back out slowly, but only about halfway. If it bounces completely, leave it to ferment longer.
In my kitchen the temperature can fluctuate depending on the time of year. In the peak of summer my bulk ferment is much quicker than in spring, autumn or winter. The yeast will rise much faster when it is warm.
Under-proofing the dough is a very common issue. You can tell if your loaf was under-proofed after it has been baked. A thick and chewy crust (that is hard to cut), a gummy and under cooked texture, a dense crumb, a few large sporadic holes…these are all signs of an under-proofed loaf.
Under fermented loaves can sometimes have quite a good oven spring and give a great rise once baked. However, often that’s a few uneven large bubbles at the top of the dough that have done that.
A too short bulk ferment or an immature starter that wasn’t quite ready to bake with can be the cause of an under-fermented dough.
Here are a few under-fermented doughs. They all look different, but what they have in common is their lack of proper fermentation.
A well-fermented dough has a much more even crumb once baked. It’s open, lacy and light, without dense patches.
Below are a few well-fermented doughs.
How wild the crumb is of a well-fermented dough depends on the hydration of the dough as well as the flour type. Wetter doughs will give a wilder and more open crumb, while a dough with lower hydration will have a tighter crumb. Breads made with a lower protein flour, such as all-purpose flour will have slightly less strength and a less open crumb too.
Now on the other end of the spectrum, you can also over-ferment your dough.
This can happen if the weather is really warm, or the dough has just sat for too long.
An over-proofed dough is when the yeast has created so much gas that the gluten structure cannot hold it anymore. The dough becomes extremely fragile and can collapse.
If you prod an over-proofed dough with your finger it will leave an indent that doesn’t fill back out at all.
Learning to gauge your dough to see when it is ready is something that you will learn over time, and I encourage you to keep practicing and perfecting it. Watch the dough and not the clock.
Doing a pre-shape can help gauge if your dough has proofed enough. Once you think bulk fermentation has finished perform one more set of folds to shape the dough into a ball.
This pre-shape will let you feel if it is airier and fuller, with visible bubbles. Leave the pre-shaped dough ball to sit for and relax for 15-30 minutes before shaping.
However, if the dough still feels quite heavy and thick, leave it to proof longer.
SHAPING AND COLD PROOF
The shaping of the dough happens before it goes into the fridge for the cold proof. It is the shaping that creates a little parcel of dough, with some surface tension so it holds its shape when it’s baked later on.
Going right back to the basics, if your starter wasn’t ideal, and therefore neither was your folding, then your shaping will be difficult too.
How you shape can differ. I have a video of my shaping on my recipe post, but don’t worry if you do it differently. As long as you create a semi-tight shape (without degassing it too much), and some surface tension by sliding/rolling the dough on a clean bench. A well-shaped loaf is much easier to score.
A dough with a lower hydration level will be much easier to shape than with a higher level. My recipe has a hydration level of around 75% and this is low enough to shape without too much trouble.
Unlike folding, you should lightly flour your hands and workspace when shaping the dough so it doesn’t stick and tear. Once the initial shaping is complete, the surface tension rolling should be done on a non-floured part of the bench though or it will just slide around and you won’t create that tightness.
Shaping is another one that will improve with time. Soon enough it will become natural to shape the loaf so don’t be discouraged if your first attempts aren’t great.
Once the loaf is shaped, place it in a towel lined banneton basket (or bowl) that is liberally floured. A well-shaped loaf will be easier to place in the banneton basket and also to remove from the banneton basket in the morning.
If you find your dough always sticks even when heavily floured, I would assess the shaping that was done. A loose shape without the tight and smooth surface tension on the outside of the dough, can stick.
Now the dough undergoes a cold proof. The yeast action will slow right down during this stage, but the bacteria can now get to work. A cold proof brings the sour flavour to the bread. It can also give the bread better oven and spring and can make scoring a bit easier as the dough will be firmer.
I bake my loaves in a hot preheated oven and a preheated cast-iron dutch oven pot. The cast iron holds the heat really well and the dutch oven aspect captures the steam to help get a good oven spring.
After an initial covered bake, the lid is removed and the rest of the loaf can brown up.
You can alternatively use any pot with a lid, or a preheated oven tray alongside a ramekin of water or ice to create steam.
Before you bake, scoring your loaf will help direct where the steam bursts from.
Whatever you use for scoring, it needs to be as sharp as possible. I personally only like using fresh razor blades. I either place them in a lame, or just hold them. After a few weeks they’ll become blunt and I’ll switch it for a new one. Razor blades allow smooth cuts that glide through the dough without pulling at it.
For decorative scoring it doesn’t need to be deep, about 1/4 cm is good, but there should be at least one deep slash in the bread somewhere for the steam to escape, especially in a bread with lower hydration. One that is around ½ cm deep.
This designated deep slash will help stop the steam from bursting out of other places.
I usually do a deep slash down the middle of the bread, holding my razor on a slight angle. Then I do the decorative scoring on the other side.
Once it has baked, you should let it cool completely. Warm sourdough can seem slightly gummy, even if the bread was proofed well.
Sourdough Bread Troubleshooting Guide FAQs
I asked on Instagram what questions you wanted answered in this Sourdough Bread Troubleshooting Guide and here is a collection of those.
“My sourdough seems undercooked, gummy and has big cavernous holes in it”.
This sounds like the bread is under-proofed. A too short bulk ferment or an immature starter that wasn’t quite ready to bake with can be the cause of an under-proofed dough.
“How can I make my bread have more holes?”
Increasing the hydration can help achieve a more open and wilder crumb, but ensure your starter is not too acidic so it can handle the wet dough. Ensure the dough is properly proofed too.
“My dough stays so wet and sticky, even during bulk ferment”
If your dough is sloppy after a few rounds of folding, check your starter, making sure it isn’t too acidic. However, if it is just sticky and a bit wet that is normal. The point of the folding is to create a stronger dough, but it won’t take away all the stickiness or wetness. Just ensure you use wet hands to fold it so it doesn’t stick to you.
“My bread dough always seems quite dense.”
This sounds like the bread is under-proofed. Try increasing your bulk-ferment. A too short bulk ferment or an immature starter that wasn’t quite ready to bake with can be the cause of an under-proofed dough. Read the snippet on proofing above and make sure you give the yeast enough time to rise.
“It’s so hard to tell when the dough has bulked out by 50%”
Taking a picture of the dough at the beginning of the proofing time to compare it at the end can help. Or the poke test as mentioned in the post above.
“Can we still bake without the cast iron pan?”
Definitely. You can use any pot with a lid that will help create the steam. Alternatively, just use a preheated oven tray and add a ramekin of water or ice cubes to create the steam.
“Why does it take a while for my sourdough to rise after doing folds?”
Colonies of yeast are hard at work there. Plus temperatures can affect the speed at which they work which could be slowing things down. But slow is good. Embrace it
“My dough sticks to the towel every time”
Heavily flour your towel if using plain flour. Alternatively use rice flour. Also, creating good surface tension during shaping will create a tighter dough that will stick less.
“How deep should I score?”
For decorative scoring it doesn’t need to be deep, but there should be at least one deep slash in the bread somewhere for the steam to escape. One that is around ½ cm deep. This designated deep slash will help stop the steam from bursting out of other places. Using a fresh razor blade works well for this, as it needs to be super sharp.
“My bread doesn’t rise much in the oven. What do I need to change?”
Go back to the beginning and make sure your starter is okay and active.
“When starting a starter do I need to buy fresh flour or is the older flour I’ve got ok? Can it just be plain white flour?“
Older flour, plain white flour, wholemal, rye, it’s all good. Just use what
“My starter is slow, it has been a week and it’s in the hot water cupboard”
It may be too hot in the hot water cupboard. However, a week is still early. Check out the starter post for more details.
“My starter smells fruity?”
That’s normal but does indicate your starter may need feeding. Don’t let it become too acidic.
“My starter smells really pungent, like off vinegar.”
Your starter needs to be fed! Refresh it more often, or lower the seed starter amount.
“My bread has a great crust but the inside is doughy and undercooked”
This sounds like the bread is under-proofed. A too short bulk ferment or an immature starter that wasn’t quite ready to bake with can be the cause of an under-proofed dough. A thick and chewy crust is a tell-tale sign of this.
“How do I get my bread to rise up and not spread out?”
This can be due to improper shaping and not creating enough tension in the dough. However, the problem can also be traced back to your starter not being ideal which can hinder the dough and the shaping.
“After bulk fermenting my dough is sticky and slack and doesn’t hold its shape well”
Go back to basics and assess the starter. Check it’s not too acidic and that it’s being used at the optimum time.
“If I am making bread every day, should I still feed my starter after using it? So twice a day?”
Yup, refresh it every time after using it to keep the acid load low.
“I added quinoa and it made my dough a sticky mess”
Adding in large amounts of other grains does affect the dough. Start off in small increments. It also depends on if the grain is raw (and will absorb more moisture) or cooked. The water content may need to be adjusted. Begin with around 5% quinoa, and see how it goes.
“I want to add spelt to the dough, can I do this?”
Sure, but start off in smaller increments so you get used to the change in the dough. 10-15% spelt is a good starting point.
“I made a rye starter and it grew mould”
Ensure you use clean utensils and use a clean jar to pour the freshly mixed starter into. Also, not missing any feeds is important.
“Should you refresh your starter before it goes in the fridge?”
Yes, refresh it after each time you have used it, even if it’s going in the fridge.
So that’s the process and as you’ll have noticed it is not black and white. No bread is exactly the same.
I encourage you to get to know your starter, how it rises and peaks, and get to know your dough. If something goes amiss during the process, read through the Sourdough Bread Troubleshooting Guide to determine what went wrong and try perfect it the next time. Practice makes perfect!