Easy Sourdough Starter

The recipe that excites me most in our latest book, The The New Healthy Bread in Five Minutes a Day, is the easy Sourdough Starter. I’m an admitted baking geek, so spending hours on a recipe can be exciting to me, but I know this concept sounds like work to some and just terrifies others. That’s why Jeff and I set out to write these books in the first place, being able to compel busy people to bake bread at home has been our mission. Now you can also create a sourdough starter; easily, without fear and without dedicating your whole day to the project. In fact, it only takes a few minutes a day to get your starter up and running. It really is that easy, but it takes several days to get your starter strong enough to actually use in a batch of bread. Until it is ready to go, you can always bake any of the other yeast filled recipes in our books.

All you need to make your sourdough starter is flour, water and a container to keep it in. Nothing special or fancy. Just make sure the container can hold at least two quarts of starter. You’ll see some Baking Bloopers below of what happens if your container is too small.

Once you have created your starter you can use it to bake beautiful loaves, with or without added yeast. The flavor is incredible and you will still be making a large batch of dough and storing it for up to a week, so you will do the work on one day for many loaves.

To make the starter:

Day 1: In a clean Jar or container* add 1/2 cup flour (unbleached white, whole wheat, rye, brown rice) and 1/2 cup water. That’s it.

*the jar needs to be big enough to hold 2 quarts and it needs to be open to the air, since you want to gather the natural yeasts from the flour and the environment. If you seal your jar, you won’t collect the yeast and/or the jar may actually explode. Yes, I said explode, see picture at the bottom of the post.

Stir the flour and water. Let this mixture sit for 2 days on the counter at room temperature.

Day 3: You should see bubbles forming in the starter. That’s the sign you are off to a great start. If you don’t see any bubbles on day 3, leave it for another day.

If you have bubbles, add 1/2 cup flour (you don’t have to stick to the same kind you used on the first day I like to make mine with a combination of whole wheat, rye and white flour) and 1/2 cup water. Str together and let sit for one day.

Day 4, 5, 6: Add 1/2 cup flour and water to the jar and stir on each of these days to build the strength of your starter. Let sit at room temperature after stirring.

By the 6th day your starter should seem mildly bubbly and it will have a pleasant sour smell building up. Add more flour and water so you have at least 3 1/2 cups of starter to use in a batch of dough.

Day 7: Once it is nice and strong, the starter will look foamy and

if your container isn’t big enough, the starter may try to escape. You’ll notice I never snap the jar shut.

Now you are ready to use the starter in any of our recipes.

Here is a basic rule to using sourdough in your recipes, but for WAY more information and specific recipes check out chapter 11 of The New Healthy Bread in Five Minutes a Day. You will also find information about how to store your sourdough long term and how to reactivate it if you haven’t used it in many months.

To bake with your starter: Use about 3 cups of the activated sourdough starter for a full-batch of dough, which make 4 to 5 pounds of dough.  This means that you need to decrease the water in the recipes by 1 1/2 cups, and the flour by 1 1/2 cups. Adjust the water and flour to create a dough that looks and feels just like what you get with our yeast-based recipes. Depending on the strength of your sourdough starter it may take 2-12 hours for your dough to rise. This slow rise is part of the beauty of a natural lavain bread.

If you want to use your sourdough in combination with commercial yeast, you can use half as much starter (replacing just 3/4 cup flour and 3/4 cup water). Some people like the lighter sour flavor and it gives beginner bakers a sense of insurance to add the yeast.

Shape and bake as you would any of our recipes. This one is proofed in a Round Basket/Banneton and baked on a preheated Baking Steel.

Baking Bloopers:

This why you never want to use a screw top glass jar for your starter. If you have a really large glass jar that will fit the dough, be sure to poke a hole in the top of the lid so the gas from the yeast can escape.


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54 thoughts on “Easy Sourdough Starter

  1. Zoe- thanks for showing the bloopers, too. As an insecure baker, it is always reassuring to see the mess other bakers make!

  2. So to adjust the flour and water when using the starter, should I use Baker Percentages based on the original recipe for proper hydration levels? In other words, the starter is 100% hydration and the recipe calls for say 70%. So i need to adjust flour and water in order to achieve 70% hydration. I know math well enough to get the proper weights and I assume since the water to flour ration is 1:1 then it is 100% in the starter.

    1. Hi John,

      Yes, that sounds about right, you need to go by the baker percentages of the recipe you hope to incorporate it into. The book has the amounts of starter by weight, which may also be helpful.

      Thanks, Zoë

    1. Hi Colleen,

      You’ll want to save about 1/2 cup to keep it going. There are more details in the book about keeping it going and the best ways to store it. Hope this at least gets you started. Oops, no pun intended! 😉

      Thanks, Zoë

    1. Hi Phyllis,

      Yes, it was just easier for me to show the growth through glass. You can use any type of non-reactive container.

      Thanks, Zoë

      1. Zoe, is the easy sourdough recipe discussed on your posting the same as the Levain (The New Health Bread, pages 386-388)?
        Thank you!

    1. Hi Colleen,

      It depends which recipe you are making with it, but I would suggest 5 days is about right. If you use yeast, you can store it longer.

      Thanks, Zoë

    1. Hi Shawndra,

      Yes, you can. We don’t cover GF sourdough starter in the book, but we’ve had readers who have shared their success with us. Maybe one of them will share their method.

      Thanks, Zoë

      1. Hi Flo, so nice to hear from you! Your loaf looks fantastic.

        As always, thanks for all the kind words. Laura and I were so happy to finally meet you in Paris. But that was a long time ago…

  3. I just bought your gluten free book. The pictures look wonderful and I think I am brave enough to start making bread because of your book and all the work and time that went in to it. At some point I would like to try making a gluten free sourdough starter. Should I try this recipe with rice flour? Or a gf flour mixture?

    1. Hi Denise,

      I’m so glad you are diving in, enjoy all the bread! I would suggest you start with commercial yeast for a few batches and just get the feel of baking GF breads. When you are comfortable with those then sourdough is great fun and tasty. You can use a blend of flours, but they can’t contain any gums or binders. Most GF flour mixes do contain these things, so you’ll want to avoid them.

      Thanks, Zoë

  4. Hey Zoe,

    I am at day 5 and while my starter looks good, it is a bit watery,it doesn’t seem to be thick (like your photos) or climbing up the jar. Do I need more flour? I have been doing the half cup of each.

    1. Hi Marie,

      What kind of flour are you using? It will seem watery if you are using white flour only. If so, you can add 3/4 cup flour and 1/2 cup water for the next couple of additions. Whole wheat absorbs more water so it will be thicker.

      Thanks, Zoë

      1. I was using all AP flour as I was out of whole wheat, so took your advice and did two days of 3/4 c. flour and 1/2 c. water…it got my starter bubbling again, as it had seemed to stop and had a lot of liquid settling out on top. However, it never got as thick in appearance as your photos (esp. the “blooper” photos at the bottom of the post)–more like slightly thin pancake batter–definitely pourable. Is this what it should be like? I just mixed up my first bucket of dough, using the starter in the master recipe. The dough seemed to be the correct consistency, so I’m hoping it rises well.

      2. Hi Taryn,

        The blooper photo is actually the dough, so you should be all set. I will make a note of that, so it isn’t confusing.

        Thanks, Zoë

  5. This is my very first attempt and I have a few questions…..
    I am currently on Day 5 of making the Sourdough starter- no knead method.
    While I do have bubbles they are small. Also, the smell is not so great. It does not smell like a sourdough to me. I am using a 5 quart plastic bucket- so the opening is quite large.
    Here’s what I have been using for flour:
    Started the starter with King Arthur Unbleached bread flour for day 1.
    The days I added flour I used 1/4 cup of the above flour, as well as 1/4 cup of King Arthur 100% whole wheat flour.

    Am I using what I should? I thought sourdough would smell differently.


    1. Hi Melanie,

      Yes, that sounds like a great flour combination. In our book we describe the smell as being a little “barn yard” like, but in a pleasant way. It is the smell of fermentation. If you only have small bubbles, you just need to let it go a bit longer. If your kitchen is on the cool side it may take a tiny bit longer. The bubbles indicate that it is working and you have gathered the yeast.

      I hope that helps. Thanks, Zoë

  6. I’m on day 3…I have some small bubbles, and there is a little dark liquid on top, which I know is normal. But there are a few spots that have an almost blue/green tinge to them. Is this normal? I’m about to feed it and I guess I’ll see how if it continues, but I just wanted to make sure this isn’t mold. I’m using a glass half gallon jar that came straight out of the dishwasher.

    1. Hi Taryn,

      Yes, this is all quite normal. The mold would take much longer than 3 days to develop and it would be hairy.

      Thanks, Zoë

      1. At day 7 of my starter, I tried mixing up a full batch of the master recipe from the original Artisan Bread book with my starter…it never rose. I read on some other sourdough websites that the starter should be doubling in size after feeding before using it and that depending on the conditions of your kitchen, this could take several weeks…so I continued to feed it once a day for 3 weeks. My starter never did start rising significantly, but it was definitely foamier about 8 hours after feeding. So I tried mixing a batch of dough again..and again it didn’t rise.

        Is there something I could be doing wrong? I used mostly AP flour, but did use whole wheat a few days. I always measured 1/2 cup of flour and 1/2 cup of water, except for 2 days where it seemed rather thin (before I used the whole wheat) so per your previous suggestion I upped the flour those days. Towards the end, I did start discarding part of the starter each day before feeding because I was getting so much volume. My kitchen fluctuates between about 65 and 70F depending if I’m home or not, so I kept it on the hot water heater to provide a little additional warmth

        I decided finally to toss it out and will try again, but I was hoping you might have some insight into what I may need to change to make it successful.

      2. Well, things are failing at the starter step, not at the dough step.

        OK, some would say this is cheating–but start your next batch of starter with 1/8-teaspoon of yeast, and go through the cycles. After a few cycles, there isn’t really any commercial yeast still living in there–it’s been replaced by wild strains.

        Other possibilities–highly chlorinated water–you could switch to bottled water, though I think this is remote. Organic flour also might remotely help (try that last).

  7. I’m definitely encouraged to try this now.
    I have a question about the 10 grain recipe. How long can I keep it in the refrigerator?
    How do you tell if your dough is spoiled or just sourdough?

  8. Hello there! Are there any tips on maintaining the sourdough starter- as in replenishing what we use so that we can keep it going? Thank you for your help, in advance.

    ~ MK

    1. Hi MK,

      There are several ways to maintain a starter, depending on how frequently you intend to use it. We have an entire chapter in our new book about creating a starter and how to bake with it and maintain it. You can find it in New Healthy Bread in Five Minutes a Day.

      Thanks, Zoë

    1. Also, use a paper coffee filter held in place with a rubber band to cap your jar. It lets it breathe but keeps out any buggies that might be attracted to the smell of bread-alcohol brewing.

      1. Lot’s of ways to do that, but I’m guessing that the coffee filter’s not going to be a long-lasting solution. Also, a gallon’s kind of generous for starter unless you’re making huge batches, and as always, be very careful with fermenting grains in glass–it can shatter, as in the pictures at the end of this post.

  9. I’m using a 2L glass jar for my firs time starter, I’m on day 1. I let the jar cover down but did not snap it shot. I’m not sure if I should leave it completely open or as is?

    1. So long as air can escape, “down but not snapped” is fine. Just don’t snap it shut. Cheesecloth and rubber band are also fine.

  10. I bought your book “The New Healthy Bread in Five Minutes a Day” and made the starter. Today was the 6th day and the starter looked very healthy so I decided to make two loaves of Sourdough Bread. I followed the Whole Wheat Levain Risen recipe on pages 389-394, with the options of adding just a little Vital Wheat Gluten and half white flour and half whole wheat flour (King Arthur). The mixture was fine, and I allowed it to rise for 2 hours, then placed them on the pizza peels on corn meal, and let them rise for another 40 minutes each. However, when it came time to put them into the 450 degree oven, I slipped them in and they immediately went flat, not 100% flat, but lost a good deal of their rise. What did I do wrong? The final sourdough loaves did rise a little bit in the over (oven spring), but not as much as they should have. They do still taste good, and the sourdough flavor is quite strong, but they are somewhat dense, though still edible and taste good. The outside did come out crunchy from the hot water, but what can I do to ensure they won’t fall flat when transferred from the pizza peel to the oven?

    1. There is a little loss when you slide it in–be careful but brisk as you go. Biggest reason for inadequate oven-spring is a too-cool oven– check yours with something like http://ow.ly/8CVPU

      The easiest slide-off is if you use parchment, but I’m not certain that roughness of slide-off is the problem. Another possibility–you made the dough a little too dry. Could go for a wetter effect next time.

  11. Hi Zoe,
    This is my first attemp at making a sourdough, I have made other breads from the site and have ordered the book 🙂
    I’m a little confused when you say decrease the water in the recipes by 1 1/2 cups, and the flour by 1 1/2 cups. Does this mean when using 3cups of starter i use 1 1/2 cup water and 2 3/4 cup flour? And will adding grains, roasted garlic or cheeses affect the ratios?

    1. It means that in the original recipe it had a certain amount of flour and water–and you now need to decrease each of those by the amount you’re putting in, in the form of sour, which is (approximately) half and half flour and water.

      Those other items won’t affect much unless they’re big water-absorbers (like a dry grain productd like cracked wheat)–that requires more water so don’t decrease quite so much–you’ll need to experiment.

  12. To keep the started going, do I have to feed it everyday? Keep it on the countertop all the time? I don’t want to dry it out, what are my other options?

  13. Just baked my first bread from the starter. Not too great: I let it rise in a basket and then transferred it to a clay dish, it went completely flat. I baked it, still flat. It’s a focaccia at best.
    Second loaf, I let it rise in an oiled bowl. Transferred it to a baking sheet lined with parchment paper, flat again. Baked it, another focaccia.
    It took the dough more than 12 hrs to double in size. Does that have something to do with it?
    What went wrong?

    1. First thing I need to know is: which of our dough recipes are you incorporating this sour into? Which book, which page number?

      1. I”ve been baking breads for the past 4 yrs using different recipes from your books. This time around I’m following the “100% Whole Grain Levin-Risen Bread” p.389 from “The New Healthy Bread in Five Minutes a Day”.

  14. OK, so the basic recipe then. One of the complexities with that recipe is that the amount of water in the starter is variable. So the final dough can be variable too, and our method is sensitive to that,. It’s a wet dough, but if it’s a little too wet, you can have problems with too little structure–it can’t hold up it’s own weight because it’s too wet.

    That may be what’s happening here–but you didn’t say what the baked bread was like, other than that it didn’t hold its shape and collapsed. Was it super-dense? Where there holes? Were the holes, large, small, or variable?

    One semi-solution if the hole structure was good and it wasn’t super-dense: bake in a loaf pan.

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