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Let’s learn how to use a Cambro Container for easier sourdough bread baking. If you’ve ever struggled with bulk fermentation, then using a cambro container for easier sourdough baking is definitely something you need to start doing! These plastic containers are so useful!

A Cambro container is a square plastic, straight sided container with volume measurements on the side. It also has a tight fitting lid. The magic lies in the straight sides of the container which allows you to easily see when your dough has doubled and thus when bulk fermentation is finished and it’s time to shape your sourdough.

Whether you’ve been making sourdough for a while, or you’re just beginning your sourdough journey, cambro containers can be a worthwhile investment to your sourdough baking equipment, along with a good baking scale and the right sized bannetons.

So let’s look at how to use Cambro Containers for easier sourdough bread baking!

If you’re in a rush – this set of Cambro Containers is the one I recommend.

4Q Cambro Container sitting on the kitchen counter with a batch of sourdough inside. It comes up to the 1L mark on the side of the container.
This is a 4Q Cambro Container that has a batch of dough with 500g of flour bulk fermenting inside.

What Is Bulk Fermentation

Bulk fermentation is perhaps the most important part of the sourdough process. It’s where all the magic happens. After stretching and folding your dough until a strong gluten network has formed, you leave your dough at room temperature to double. It’s this doubling that is referred to as bulk fermentation. You might also have heard it called the first rise or even bulk rise. Bulk fermentation always occurs at room temperature, never in the fridge. You can read more about bulk fermentation here.

It seems to be the one part of the sourdough process that stumps even the most proficient home bakers. The reason for this is that most home bakers place their dough in a bowl for bulk fermentation. Because a bowl is tapered, it’s hard to see when the dough has really doubled, meaning that under fermentation is a common issue.

That is, until these magical translucent containers came along – cambro food storage containers!

Benefits of Using Cambro Container For Bulk Fermentation

The benefits of using a Cambro Container for monitoring sourdough bulk fermentation are:

  • easy to see when dough has doubled due to straight sides and clear measurements
  • lidded container ensures dough is safe drying out
  • dough is safe from fruit flies and other contaminants
  • container allows dough to be placed in the fridge if you’re stepping away during bulk fermentation

Cambro containers allow for easy cleaning and simple storage due to the way they stack together.

How To Use A Cambro Container For Sourdough Baking

Using a Cambro Container for sourdough bulk fermentation is really easy!

Prepare your dough as per your sourdough recipe (I recommend this simple sourdough recipe):

  1. Stretch and fold your dough until it reaches window pane (I find this easiest to do in a bowl).
  2. Transfer the dough into your chosen Cambro Container.
  3. Gently press the dough into the corners so it covers the base of the container evenly.
  4. Mark the container with a rubber band or whiteboard marker.
  5. Wait for the dough to double before you move onto shaping.
  6. When you’re ready to remove the dough from the container, use a plastic dough scraper to gently ease the corners of the dough away from the sides and then tip the container so that the dough naturally falls onto the counter top (sticky side up).
Sourdough dough pushed down into the base of a 4Q Cambro Container. The photo is taken from above so you can see inside the Cambro Container.

What Size Cambro Is Best for Sourdough?

Cambro containers are available in a range of sizes and shapes. I have tried a number of sizes to try and find the best container for making sourdough bread. I like using square cambro containers, but you could also use round ones.

I recommend using a 4Q Cambro container for sourdough with 500g of flour and a 6Q Cambro container for dough with 1000g of flour.

I love this double pack of Cambros which gives you both the 4Q and 6Q to use in your kitchen. It also had the lids included, which is not always the case with all Cambros.

Two Cambro Containers stacked on top of each other. The one on the bottom has a red lid and is 6Q in size, the one on the top has. green lid and is 4Q in size. There is a white tiled wall in the background.
I purchased this double pack of Cambro Containers so I have the choice of the 4Q and 6Q, depending on the size of the dough I’m working with at the time.

You don’t want to use a large container if you only have a small amount of dough because you won’t be able to see when the dough has doubled. It’s better to use a smaller size so that you can observe the dough more easily as it rises.

Cambro Containers are generally too large to store your sourdough starter in. I recommend a glass jar to store sourdough starter.

Frequently Asked Questions

Do I need to oil my cambro container?

You don’t need to grease or oil your cambro container before you put the dough in. As long as your dough has a strong gluten network, it will easily release from the cambro container when it’s time for shaping.

Can I stretch and fold sourdough in a cambro container?

You certainly can stretch and fold your sourdough in a cambro container. I find it easier to do this in a bowl and then transfer the dough once it’s reached window pane, but you certainly can stretch and fold in the Cambro Container if you prefer.

Is it ok to bulk ferment sourdough in plastic?

Yes it is perfectly fine to bulk ferment your sourdough in a plastic container or bowl.

Share the sourdough love!

Hey There!

I'm Kate, The Pantry Mama.

I can help you find your sourdough rhythm and bake sourdough with confidence and intention - even if you’re busy! I share tried and tested sourdough recipes, as well as practical, easy to follow tips that you can action today, for better sourdough tomorrow! Join me, and let’s bake sourdough together among the chaos of everyday life!

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20 Comments

  1. Lauren says:

    Hello! Thank you for all of the sourdough help – curious about what I’m measuring as the top of the dough towards the end of bulk fermentation? Am I measuring to the top of the dome of the dough or where it is still making contact with the container? Thank you!

  2. James Cairns says:

    When using a Cambro container for the bulk ferment, do you use the domed top of the dough to determine whether it’s doubled or where the dome starts, because I find there is quite a difference in this measurement. I like you articles because they don’t get super-technical as a lot of others do, so keep up the good work! Thank you.

  3. Susan says:

    Your articles, pictures and suggestions are most helpful. Thank you!!

  4. Puja Amarnani says:

    Please can you tell me whether final.shaping should be done immediately after bulk fermentation , before refrigerating or that I should first refrigerate after the bulk fermentation and next day I could shape it?
    Thank you

  5. Caroline Williams says:

    Can you put the Cambro container in a Proofer?

    1. The Pantry Mama says:

      Yes I use my cambro containers in my Brod & Taylor proofer all the time 🙂 Works really well and means I can fit more in there too!

      1. Caroline Williams says:

        Great! I have a Brod & Taylor proofer as well. Thank you so much for your reply.

  6. Debbie Krovious says:

    Hi! I’m not a baker at all, but a friend gave me SD starter and after reading many articles, I’ve baked my 4th loaf. I’ve read that the dough needs to rise 50-75 % in BF, not 100%. Correct? I’m trying to learn a new hobby. That’s why I’m checking out these containers. Thanks for your help.

  7. Pat says:

    I plan to use a seed mat to keep temps warm as my house is cold. Do you recommend putting the vessel right on top of the mat or putting it with the cambro in some type of chamber?

  8. Dani says:

    Hi! Thanks for this post! I just used my 6qt Cambro for the first time to make your Honey Oat recipe. I doubled it. It seemed like it took forever to finish the bulk rising and then when I put it in the fridge it kept rising, and fast! This morning it had exploded out of my banneton. Did I let it bulk rise too long? It ended up being about 10 hours 😬

  9. Jessica says:

    I’d love to see a picture of dough that is ready to be shaped in the Cambro! What the bubbles should look like, etc.

  10. Joanna Mueller says:

    I was under the impression you shouldn’t cover your sourdough with a lid because of the gasses that escape. Is the Canbro safe to use through the duration of stretch and folds and bulk formation?

  11. Monica Tomchek says:

    I make 81/2 loaves at a time. 2 questions:
    1. Would this square Cabot still be good for bulk ferment? ( big rectangle ones are heavy to deal with.

    2. Is 4-6 mins still enough mixing time? I have been mixing for 10.

    ( my loaves have been deflating when dumped out of banneton, so I’m figuring I need to bulk rise longer than 6 hrs. I need to do the over night plan.

  12. Frank Napoli says:

    I always use the rubberband now! Great tip! Now using masking tape because all the larger bands snapped! LOL Thank You! Great recipes I use always also!

  13. Hamza says:

    Does the crumb get affected if we move it to a square container and spread it out to fill the corners. I feel like I’m deflating the dough and the surface is not as taut

    1. Jen @ TPM Team says:

      No it should be fine as long as you do it at the beginning of bulk fermentation 🙂

  14. Rebekah says:

    What does “window pane” mean?

    1. Kate Freebairn says:

      You’ll find an explanation for a window pane in this sourdough glossary 🙂

  15. bri says:

    Hi in your co trainer it says dough is at 1 L did u leave it to 2L when bulk fermentation finished? To double. I always read 50%

    1. Kate Freebairn says:

      Yes I always let my dough double 🙂