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 donโ€™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 doesnโ€™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 1065 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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Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week!
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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 itโ€™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 โ€œmaster starterโ€ 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 โ€œlittle guysโ€, 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 wonโ€™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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2,184 Comments

  1. Nicole Marie says:

    Hi! Day 3 over here! Has a sour dough smell already! My question is everytime I go to remove and redo step one am I just removing from what I see or do I mix it first to combine everything that is already in the bowl before removing and adding new to it? How do you remove? Today I just scooped out the half but wanted to see if you had a different way of doing that.

    1. Lisa Bass says:

      You can mix it all together before discarding half! I usually just eye ball the jar and pour it out until it looks like there is only half left. You could also measure it with a scale if you want to be more precise.

      1. Karen says:

        Iโ€™m confused. If I mix and then remove half I have wasted 1/2 cup of flour. Correct ? If I take out half of the starter first then the whole cup of flour is left .

        1. Lisa Bass says:

          Yes, it’s just something you have to do in the beginning. You always have to feed it however much you have in your jar. If you had 1 cup of starter, you’d need to feed one cup water and one cup flour. Then the next day you would have around 2-3 cups of starter. So you’d have to feed 2-3 cups water and 2-3 cups flour the next day. See how it would make you have to feed even more?

  2. Diana says:

    1 star
    Iโ€™m a week and n on this starter and realize the measurements are far too much, and the timing far too short for a starter. Delving into much more research on this new adventure reveals that most starters begin with just 40 grams, or about 1/3 cup! My starter jar is full with no room for it to double – and, yes, I discarded half each time I fed. Feeding 1 c. each time is way too much, as Iโ€™ve learned. I will discard most of it and, hopefully, move forward successfully feeding it much smaller portions for a longer period of time to get the most effective starter.

  3. Sharon Leary says:

    On day 2 you say add flour, bur dont say whole wheat or white, If whiteall purpose or bread?

    1. Lisa Bass says:

      You can use any type of flour. I like to use all purpose.

  4. Anna says:

    This is my second time making a starter(I was a bad starter mom and let my last one die).

    Iโ€™m on day 3 and within 2 hours of feeding, itโ€™s doubled in size. After feeding it last night(day 2) it quadrupled and exploded out of the top. Is this normal? I donโ€™t remember it being so bubbly this early on.

    1. Lisa Bass says:

      Yes, that’s a great sign. ๐Ÿ™‚

  5. kate says:

    5 stars
    Me againโ€ฆ I have another question. So on day 2 my sourdough doubled and then fell back down but I noticed some hooch on the bottom of my starter. So for my day 3 feeding I mixed the hooch back in it and did my regular feed but on day 4 I noticed that my starter hasnโ€™t really risen and that it is more liquidy and has a little bit of hooch on top now. For my day 3 feeding I lowered the water from 1/2 cup to a little less hoping that would help but it is still liquidy what should I do?
    Thankyou

    1. kate says:

      adding onto that I have fed it but doubled it for the night and did a cup and water and flour instead of 1/2 a cup so hopefully that does not ruin it. And if so after doubling it, do I have to stick with my doubled measurement or can I go back to 1/2 a cup for both?

  6. Gayle says:

    I’m on day three with my starter. It smells bad. Very active but not a good smell. Will it get better?

    1. Lisa Bass says:

      Yes, just keep going! A smell is very normal.

  7. Jackie says:

    5 stars
    Iโ€™m sure itโ€™s just me but why is my sourdough starter day 1 already producing hooch?? What do I do?? Itโ€™s only been 5 hours since I made it.

    1. Lisa Bass says:

      Did you mix the right measurements? Sounds like it is already hungry! I would go ahead and feed it again, making sure it has enough flour.

  8. Paige says:

    Quick question if I were to do a 1/2 cup for both the flour and water instead of 1 cup like you did is my starter still going to be fine?
    Thank you

    1. Lisa Bass says:

      Yes, that’s just fine!

  9. kate says:

    4 stars
    I have a couple of questions. First I started my sourdough starter but have only been doing a 1/2 cup water and a 1/2 cup flour everyday instead of 1 cup for both. Is that okay and will it still work? I have also been weighing my starter every day and taking out half for discard and considering the weight of the jar too is that right as well? This is my first time and I have a lot of questions and need a lot of help.

    1. Lisa Bass says:

      Yes, that’s okay! As long as you are keeping the ratio the same. You’re doing everything right!!

  10. Deegal says:

    3 stars
    I recently tried this recipe using King Arthurs unbleached all purpose flour. I am on day 8 and my starter has minimal rising/ bubbles but there is a smell of fermentation. I do not think it is mature enough to bake with but I am unsure what steps to continue with. Should I store it in the refrigerator and allow it to bubble or should I leave it on the counter and continue discarding and feeding it? I am unsure what happened but I really donโ€™t want to throw it away and start over.

    1. Lisa Bass says:

      I would keep feeding it. Sometimes it can take up to two weeks! You could also try adding a little bread flour at the next feeding.