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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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. Sr. Mary Magdalene Grobe says:

    I have been following your recipe for a starter and am now on day9 and still it is not working- I am using home grown and milled wheat flour and filtered water- but maybe the problem is the water. Any suggestions? Thank you so much and Merry Christmas!

    1. Lisa says:

      Merry Christmas! It could be because it is winter and if your house is cooler than your starter just maybe a little bit slower to take off. I would just keep feeding and discarding it. Try placing it in a warm place (but not too hot)

  2. Amanda says:

    Hi! I just started yesterday, and I m using a glass jar, even after removing half of the previous day, it appears my starter would outgrow its jar if it were to double in sizeโ€ฆ does the straight side jar matter?

  3. Nicole says:

    Hi!

    On day 8 and donโ€™t know what else to do or if itโ€™s even rising. Had the 2-3 day rise and tons of bubbles those days but itโ€™s slowly gone away (I know this is a โ€œfalseโ€ rise). I feed it at 9:30 PM and didnโ€™t stay awake to check after 4-5 hours. In the morning it was a little bubbly. Do I keep feeding every 24 hours or keep up with the 12 hour feeds?

    1. Lisa says:

      It can take two weeks (sometimes more!) to get your starter ready. So, keep going! I’d suggest every 12 hours.

  4. Kelsie says:

    Recipe was simple to folllow, however, it didnโ€™t work. My starter was always covered in hooch after 24 hours and it never doubled in size after almost 2 weeks of feedings.

    1. Lisa says:

      Hooch is a sign it needs fed. So, I would feed it more often and keep going! There are a lot of factors that go into making a sourdough starter, such as temperature, type of flour and water, etc. Even altitude plays a role. Everyone’s experience is going to be a bit different. I hope it takes off for you soon!

  5. Abigail says:

    Hi, if I live overseas in a tropical environment, does this change the frequency of feeding at all? Iโ€™ve had some failed attempts at fermenting veggies and Iโ€™m discouraged and suspect the extremely humid and hot environment of my home ๐Ÿฅด

    1. Lisa says:

      Temperature and humidity can play a role, yes! Since I have not experienced creating a sourdough starter in a tropical environment, I can’t say for sure exactly how it will need to be adjusted. I would say try and experiment to see what works!

  6. Isis says:

    Day 7 of starter

    Hi, Iโ€™m on day 7 of my first time making a starter. My dough is bubbly and smells good but still not growing much either. Could I still use the starter or should I wait until it grows?

    Also, can I save discard in the fridge to use the next day or no?

    1. Lisa says:

      Have you tried the float test? If it passes the float test, that means it is active and ready. I know for some people there starter does not grow quite as much, but is still good to use. The float test will determine that. It also may take more than 7 days to become active. Yes, you can save the discard in the fridge to use the next day.

  7. Rachel says:

    Hi… How much starter do you need for a loaf of bread (eg 500g flour)? I have a large family, we bake practically all our bread, but I like to do it in batches rather than everyday… I think I would need multiple jars of starter going – am I right? Thanks

    1. Lisa says:

      It would depend on the recipe, I would say most loaves need about 1/2 cup of starter, plus you would want extra leftover, so you would need at least 1 cup of starter to make 1 loaf of bread. If that makes sense.

      1. Robbie says:

        Can you immediately start using the discard from day 2? I read that it could take 7-14 days for the starter to be ready to make bread, but when can I begin using the discard?

        1. Lisa says:

          Yes! You can use the discard right away! It wonโ€™t be fully fermented because itโ€™s so new and there arenโ€™t as many yeasts present, so if you struggle with health issues from conventionally prepared bread and gluten you may not want to. But it will work fine in the recipes!

  8. Jessica says:

    I need help! So on day 2 it doubled in size and bubbled out of my jar! But I continued the process as directed and itโ€™s been a watery mess since๐Ÿ˜ญ I am on day 6..this is like the 5th time I try.

    1. Lisa says:

      If it is too watery, you will likely want to either add a bit more flour or a little less water to get the right consistency. Hope that helps!

  9. Jessica says:

    I need help! So I aster say 2 it doubled in size and bubbled out of my jar! It I continued the process as directed and itโ€™s been a watery mess since๐Ÿ˜ญ I am on day 6..this is like the 5th time I try.

  10. Kelsey Ramsingh says:

    Hi Lisa

    I just started my starter on Monday I did a cup flour and a cup of water. On day two I discarded about half and repeated my process. After that discard I never discarded again because I keep reading so many other reviews. Iโ€™m now say 5 and it looks ok I think there are bubbles on the top. In your opinion should I discard and feed?

    1. Lisa says:

      Yes, you want to keep discarding and feeding as directed.