Learn how to make a sourdough starter recipe from scratch with just flour and water. This versatile ingredient can be used to make breads, cakes, cookies, and so much more.

If you hang around the traditional foods community, chances are you have heard of making homemade sourdough starter from scratch.

I have had my homemade starter for over six years now. It is vital in my traditional food kitchen.

What Is A Sourdough Starter?

A sourdough starter is a live active culture made of fermented flour and water that is full of beneficial bacteria and yeasts.

It is used as a way to ferment recipes and naturally rise bread.

Why You Will Love Sourdough:

If you are unfamiliar, let me fill you in on all the reasons why crazy folks, like me, go through the effort of handcrafting, and maintaining, a beneficial colony of yeasts and bacteria in their kitchens.

Before yeast was isolated and sold in little packets, sourdough starter was a valuable commodity in homes and families, passed down for generations.

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Health Benefits

Have you ever heard of phytic acid? Basically, it’s an antinutrient found in grains, beans, and nuts that interferes with the absorption of certain nutrients. They are present on grains to keep them from spoiling.

There is a reason they are there, but there is also good evidence that our bodies weren’t meant to handle them. Proper preparation of grains eliminates most, if not all, of the phytic acid in offending foods.

This is the very reason traditional cultures soaked and fermented their grains, seeds, and beans. These days, we’ve lost that art. And what have we found? People can’t handle grains anymore.

Instead of using instant yeast packets, people in traditional cultures leavened their bread with a fermented starter that captured all the yeasts in the environment.

AKA Sourdough starter

How on earth do we capture native yeasts? Read on, because I explain how to make your very own starter.

Because I love good food

I already confessed my foodie tendencies with you all. I reckon it’s the same inclination that led me into the world of homemade sourdough.

Locally made sourdough starter, with the native yeasts of the area present, is certainly the thing a foodie’s dreams are made of. A jar of healthy, productive starter is teaming with life, as evidenced by all the bubbles you will see rising to the surface.

Once you’ve experienced homemade sourdough baked goods, store-bought breads and pancakes simply don’t cut it. Sourdough has a depth of flavor that just can’t be found in something made quickly with a packet of instant yeast.

This post contains affiliate links, which means I make a small commission at no extra cost to you. See my full disclosure here.

FAQ:

hand holding a wooden spoon in a bowl of sourdough starter with a blue and white towel to the left

How long does it take to make sourdough starter?

It takes about a week to create an active sourdough starter, but sometimes it can take about two weeks to make a starter ready to bake bread.

Do you have to discard sourdough starter every time you feed it?

When you are first creating your sourdough starter, yes. If you don’t discard you will have so much starter that it will be hard to keep healthy. This is because the more starter you have the more flour and water you will need to add for the yeasts and bacteria to feed on.

After having a starter for a while rather than discarding you can just use it in discard recipes. This is a much more useful way of removing some of the starter rather than throwing it in the trash.

How do you know your sourdough starter is ready to use?

You will know your sourdough starter is read to use when you feed it and after 4-12 hours it doubles in size and is super bubbly. A good way to be able to determine this, is to place a rubber band where the top of the starter is after you feed it. Then after a few hours have passed you can see just how high it has grown.

Another way is to perform the float test. Take a small glass of room temperature water. Add a quarter sized dollop of active starter. If it floats, it is ready to bake with. If it doesn’t it is not active enough.

Sourdough Starter Recipe:

By now, you know why you want to have a bowl of sourdough starter bubbling away in your kitchen, but how the heck do you make one?

Ingredients

Flour (Whole grain wheat, unbleached all-purpose, and einkorn are all great choices.)

Filtered water (I use a Berkey water filter. We have the Royal size for our family of 7. You can find my full Berkey review HERE.)

Tools

Glass bowl (Metal can react with beneficial bacteria and yeasts.)

Wooden spoon

Tea towel

How To Make Sourdough Starter

Day 1:

On day one, mix one cup of flour and one cup filtered water. Stir vigorously, making sure to scrape down the sides and incorporate everything. Place a clean tea towel over the bowl and set aside. Allow it to sit for 24 hours.

Day 2:

On day two, discard half of the mixture and repeat the process. Add one cup flour, one cup water, stir vigorously, and cover.

Why do you have to remove half the mixture? By day four, you would have sourdough starter overflowing from your bowl. Also, removing half ensures that the right amount of flour and water is feeding the growing colony of beneficial yeast. If you weren’t discarding half, the cup of flour wouldn’t be enough to feed them on days three and four. Basically, you would end up with a lot of extra starter by the end of the process, and none of it would be mature.

Day 3-5

Repeat the day two instructions for days three, four, and five.

Day 6-7

On days six and seven, do the same but feed it every 12 hours, instead of every 24.

By day seven, there should be enough beneficial bacteria and yeast present to bake sourdough bread and other fermented sourdough goodies, like pancakes and english muffins.

You will know it’s working if it bubbles, and doubles in size.

Sourdough Starter Maintenance

Once your sourdough starter is alive and active, there will be some maintenance to keep it going for years and years.

In the refrigerator for occasional use

Storing it in the refrigerator slows down the fermentation process, so one feeding per week, or every other week, is sufficient.

I usually use my starter a couple times per week. If I plan to make pancakes Saturday morning, for example, I will pull my starter out of the fridge Friday morning and add flour and water. By Saturday morning it is bubbly and ready to go.

I remove the two cups of starter needed for my pancake recipe, and put the “master starter” back in the fridge. Since it was fed the day before, it is good to go for another week, or whenever I need it next.

On the counter for daily use

Since the “little guys”, as my kids like to call the bacteria in the starter, are active at room temperature, they will have to be fed more often if keep it in this state.

If you leave your starter out on the counter, you will need to add flour and water every day. You will also have to be baking every day to use up all that starter.

Most people probably won’t use the starter quite so much, unless you own and operate a bakery. I would recommend storing it in the refrigerator between uses.

Video tutorial on how to make a sourdough starter from scratch

Helpful Resources

Every day I get loads of questions about sourdough starter, so I devoted a whole post called, How to Care for Sourdough Starter filled with your questions and my answers. You can use this post a reference guide.

Thank you so much for stopping by the farmhouse! I hope this is just the beginning of our sourdough journey.

Check out my other sourdough recipes and posts

If you try this recipe and love it, I would love if you gave it 5 stars! Also, tag me on Instagram @farmhouseonboone.

Sourdough Starter

4.53 from 1188 votes
Learn how to make a homemade sourdough starter from scratch. Video tutorial also includes sourdough health benefits and our favorite ways to use sourdough starter in the farmhouse.
Additional Time: 7 days
Total: 7 days
Servings: 1 sourdough starter
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Ingredients

  • Flour, Whole grain wheat, unbleached all purpose, and einkorn are all great choices.
  • Filtered water

Instructions 

  • On day one, mix one cup of flour and one cup filtered water. Stir vigorously, making sure to scrape down the sides and incorporate everything. Place a clean tea towel over the bowl and set aside. Allow it to sit for 24 hours.
  • On day two, discard half of the mixture and repeat the process. Add one cup flour, one cup water, stir vigorously, and cover.
  • Repeat the day two instructions for days three, four, and five.
  • On days six and seven, do the same but feed it every 12 hours, instead of every 24.
  • By day seven, there should be enough beneficial bacteria and yeast present to bake sourdough bread and other fermented sourdough goodies, like pancakes and english muffins. You will know it’s working if it bubbles, and doubles in size.

Notes

Sourdough Starter Maintenance

  • Once your sourdough starter is alive and active, there will be some maintenance to keep it going for years and years.

In The Refrigerator For Occasional Use

  • Storing it in the refrigerator slows down the fermentation process, so one feeding every week, or every other week, is sufficient.
  • I usually use my starter a couple times per week. If I plan to make pancakes Saturday morning, for example, I pull my starter out of the fridge Friday morning and add flour and water. By Saturday morning it is bubbly and ready to go. I remove the two cups of starter needed for my pancake recipe and put the “master starter” back in the fridge. Since it was fed the day before, it is good to go for another week, or whenever I need it next.

On The Counter For Daily Use

  • Since the “little guys”, as my kids like to call the bacteria in the starter, are active at room temperature, they will have to be fed more often if kept in this state.
  • If you leave your starter out on the counter, you will need to add flour and water every day. You will also have to be baking daily to use up all that starter.
  • Most people probably won’t use the starter quite so much, unless you own and operate a bakery. I would recommend storing it in the refrigerator between uses.

Nutrition information is automatically calculated, so should only be used as an approximation.

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Recipe Rating




2,962 Comments

  1. Bobbi Webley says:

    I’m just in the morning if day 3 but I don’t dump it till 5 tonight. There is water at the bottom of the starter- can I mix it in before dumping 1/2 out?

    1. Lisa Bass says:

      Yes, that is fine. That is just a sign that your starter is hungry and doesn’t have anything left to feed on.

  2. Janie Mc says:

    3 stars
    I have followed this recipe twice now. To the T. neither time was the starter “growing” /no big airbubbles & stretchy. I even videotaped the second attempt to check my actions. Sad to say, I waisted 4 pounds of flour. I have no clue what I am doing incorrectly. I hate to bother a friend for another starter.

    1. Lisa Bass says:

      I am sorry you did not have luck with my starter recipe! There are a lot of variabilities that go into making a starter. Flour to Water ratio, types of flour/water, temperature…etc.

    2. Regina Prunty says:

      I am also sad how much flour this recipe made me waste! Check out the sourdough journey from Tom on YouTube; unlike Farmhouse On Boone, his recipe actually works. His was the third recipe for starter that I tried but the only one that worked!

      1. Anonymous says:

        This one worked great for me and all my friends use it 💛

    3. Leah Parisi says:

      1 star
      Same with me. This recipe has not yielded me a sourdough starter in five weeks of trying.

      1. Lisa Bass says:

        I am sorry you are having issues with your sourdough starter!

        1. Leah Parisi says:

          1 star
          Sure seems like you are!

  3. Brooklyn says:

    I when you say it should bubble and double in size are you saying after feeding whatever amount it is should double by the next time you feed? So if I just discarded half and then added the cup of water and the cup of flour and whisked. It was 600mL so it should be 1200mL in 24 hours if it’s working?

    1. Lisa Bass says:

      Yes, it may even double before the 24 hour mark. Mine is usually somewhere around 8!

  4. amanda says:

    5 stars
    I started my sourdough starter with a different recipe that i found first. It was calling for a 1:2 ratio of water and fluor. My starter has bubbles and doubles in size but the consistency is dense and not smooth. I tried to make Dough with this but it was hard to get all the flour incorporated, again it wasn’t smooth, and it never rose. Do you have any tips or tricks?

  5. Kyle Zeller says:

    If we started a starter and did the 7 day process to activate but then didn’t use it everyday and left it out on the counter, is it still active? We keep having issues with our bread not really rising during baking. Can a starter go bad?

    1. Lisa Bass says:

      Yes. If you leave it on the counter, then it needs to be fed every single day. If you do not want to bake with it daily, then you should store it in the fridge and pull it out, feed it, and let it become active before using it in a recipe.

  6. Anna says:

    Hi Lisa! I am on day 10 and my starter is bubbly only on top and doesn’t rise at all. My kitchen is cool so I’ve tried putting it in the oven with the light on after feedings. I also tried your suggestion in earlier comments to do less water than flour. Nothing has helped so far. This is my third starter attempt (my second was with starter from a bakery that still wouldn’t rise in my home). I’m feeling really discouraged . Help!

    1. Lisa Bass says:

      Are you using filtered water? Unbleached flour? Discarding half after each feeding? I would look at those three and make sure you are doing those. If you are still having trouble, are you using any kind of harsh cleaning chemicals in your kitchen? Sometimes that can affect the starter!

  7. Mickey says:

    Sadly I started my sourdough 20 days ago. I have been feeding and discarding every 12 hours, since it still isn’t doubling in size. My house is cooler, so I figured it would take longer to establish my sourdough, but 20 days? Everyone is telling me to put it in the oven with light on or the microwave, and I am just stubborn enough not to do this because I don’t want to make this adventure difficult. Should I ditch it all and start over? I am using organic all purpose flour and bottled spring water. I am following your recipe. Thanks for your ideas.

    1. Lisa Bass says:

      If you aren’t seeing results you need to cut back to once per day feeding. Make sure you are discarding half. I do agree about putting it somewhere warmer if your home is really cool. Flour and water sound right! I bet it is a temperature issue. Colder temperatures take longer to rise/ferment. If you are feeding it 2x per day, you’re likely not giving it enough time to become active.

    2. Penny R. says:

      1 star
      This seems to be a common thing with this recipe. I’m glad it’s not just me.

    3. Jill says:

      Ditch it and start over with Tom on YouTube – you’re not going to get a working starter using Farmhouse On Boone.

  8. Teri says:

    4 stars
    Everthing worked out perfect but, how do you keep your bread from drying out so bad? After the second day of storing it in a bread bag (I got some on Amazon) it was way to dry.

  9. Madilyn Huber says:

    What day can I start storing in the fridge? And also, when I add the flour and water, is it the same process as day two? ( discarding half of it and then adding a cup of flour and a cup of water)

    1. Lisa Bass says:

      After it becomes active, typically 7 days.

  10. Mari says:

    Excited to try this! Can I use GF flour? Or what are your suggestions if I want to keep it gluten free. Thank you!!

    1. Lisa Bass says:

      Yes, you can!