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 1052 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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2,073 Comments

  1. Wendy says:

    I have just started the starter and I am using a jar with latch type lid is this ok or should it be in a bowl? And should I leave the lid open or latch shut

    1. Lisa says:

      You want air to be able to circulate in the jar to capture those wild yeast, so I would recommend just putting a tea towel over top and not latching the lid. It can stay in that same jar, that’s no problem, just don’t want to seal it.

  2. Samantha says:

    Thank you for sharing your starter recipe! I have another starter for sourdough but it is completely different than this. It requires a vented lid in the fridge. I noticed your picture has starter in a air tight container, so am I correct in assuming that is a viable option for this particular starter then? Thanks for you help!

    1. Lisa says:

      I only put an airtight lid on it when I’m storing it in the fridge. If it is on the counter, I cover it with a towel. Hope that helps!

  3. Amber says:

    When you say discard do you mean literally throw away?

    1. Lisa says:

      Yes. Or use the discard in discard recipe.

  4. Mariah says:

    I’m on day 5 of my starter and it’s bubbling beautifully but I have a liquid hooch on the top layer, is that okay?

    1. Lisa says:

      Yes. It does mean it is hungry though. So maybe it is not being fed the right ratio of flour to water to starter.

  5. Brittany says:

    Hello!

    I am new to sourdough and this is my second attempt at making a starter. I am using your starter recipe (for the first time). I am on day 8 now. I have lots of bubbles but it has never risen for me. Day 2-7 always had quite a bit of hooch on top. Today, day 8, I don’t have any hooch after this mornings feeding so hopefully the ratio was better. I did a float test this afternoon and it sank. Any advice? Our house isn’t super warm and neither is our filtered water. Keep with the process and hope it rises before the 2 week mark? In using organic unbleached AP flour, should I try some rye? Thank you!

    1. Lisa says:

      I would keep pressing on discarding and feeding every 12 hours. Sometimes it does take longer than a week, especially in the winter when temps are cooler.

  6. Vicky says:

    Hi! Day 7 and checked my last discard, before feedingโ€ฆpassed the float test. I still did the discard and feed. My question is: tomorrow on day 8 when I want to put it away for maintenance in the fridge, do I need to just put it in the fridge or should I do another discard and feed and then into the fridge? Thank you for helping clarify this.

    1. Lisa says:

      I would discard and then feed it before putting it in the fridge!

  7. Tracy says:

    Made your starter recipe back in September. I made a batch of bread that turned out really good, or it was for me as it was my first time. I stored the leftover jar of starter in the refrigerator. I have not done anything to the starter since that time. Iโ€™m ready to try again. It has developed a couple of inches of a dark liquid on top. I read some articles online that this is called โ€œhoochโ€. Can I use this starter? Is it any good? I didnโ€™t find this question answered on your website about leftover starter. I could have missed it. Thanks for any info.

    1. Lisa says:

      Yes you can use this. You can either dump off the hooch or stir it into your starter. Either one will work!

  8. Kristen says:

    Hi! On day 7 and I havenโ€™t had a rise yet. There are bubbles but I donโ€™t feel that it is ready to use. Do I keep feeding twice a day until it doubles? Thanks!

    1. Lisa says:

      It can sometimes take more than a week or two. Have you tried the float test?

      1. Kristen says:

        Sorry, replied above I guess

      2. Kristen says:

        I did and it sank to the bottom. Should I continue feeding twice a day? I am on day 9.

        1. Lisa says:

          Slow down to once a day feeding to ensure that your dough is rising properly.

      3. Kristen says:

        In day 15. Still not doubling. I started using ratio 1:1:1 by weight a few days ago. Any suggestions? My house is warm and Iโ€™m using our well water. Still feeding every 13 hours so going through a ton of flour

        1. Kristen says:

          12 hours *

          1. Lisa says:

            Are you still getting lots of bubbles? Have you tried doing the float test. Feed your starter, let it sit in a warm place for 4-12 hours. Once it is nice and bubbly, add some water to a jar and place a small dollop of sourdough starter in the cup. If it floats it is ready to use. I had a friend who’s starter wouldn’t double, but could still make a good loaf of bread.

  9. Kay Howington says:

    On day six and seven do I discard half as well before I feed it every 12 hours?

    1. Lisa says:

      Yes

      1. Kristen says:

        Yes and it sank to the bottom. Do I keep feeding it twice a day? This is day 9.

        1. Lisa says:

          I would slow down to once a day feeding to ensure that your starter is rising and bubbling.

  10. Kristie says:

    On day 10, starter floated yesterday, but when I checked it this morning after feeding it last night it did not float. It was doubled in size and had good activity. So I am confused on if it is ready. Also at this point should I only be feeding it once a day?

      1. Anonymous says:

        So it will not be ready to make bread if it has started to fall and didnโ€™t float?

        1. Lisa says:

          If it doesn’t pass the float test, it is not active, and probably won’t work well to bake bread. Ideally, you want it to be at its peak before making bread. Hope that makes sense!

          1. Jeanette Christy says:

            Hi Lisa! finally got starter being nice!!! made my first sour dough bread! Just followed your recipe! but when i was pulling and stretching it was a little sticky! I pulled fold stretching add a bit of flour hands before putting in a floured basket! what did i do wrong?????thank you for helping loved your recipes!

          2. Lisa says:

            Sometimes it takes extra stretching and folding for it to become more dough like and less sticky!

      2. Kristie says:

        So it will not be ready to make bread if it already started to fall?