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 1179 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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2,889 Comments

  1. Margaret E Whisenant says:

    5 stars
    Hi. Successfully I did make some recipes ,mostly for beginner. But I do have a question. I feed my sour dough starter and wait for it to double, and has a bunch of bubbles. Good.I stir it down and check to see if it floats. No. I have to stir when it doubles a LOt of times before I get it to float. Do I check it when it’s doubled,bubbly, or after I stir it to see if it floats.

  2. Anonymous says:

    What do you do if your starter doesn’t double in size?

    1. Lisa Bass says:

      Is it rising at all?

  3. Sarah says:

    Hello, so I let my starter get moldy. Was going to try making this from scratch. Can I use the discard in discard recipes as soon as I start? Like day 2?
    I let mine get moldy about the time I needed to remake pancakes and tortillas. I do more with discard.

  4. Rae says:

    i started this 3 days ago, i did the steps for day 2 but on day three, time got away from me and i didn’t do the step, and now on day 4 i did the step, but was wondering if i messed it all up by missing day 3’s step? It has a very potent almost like sour cheese smell to it. Do i need to dump it and start all over?

    1. Lisa Bass says:

      Just discard extra and you may have to feed the starter for a few more days until it is active.

  5. Wanda Addis says:

    After your sourdough is started, when you bake and take out 2 cups do you replace it with 2 cups flour and 2 cups water?

    1. Lisa Bass says:

      You need feed it at least as much sourdough starter that is in the jar remaining. If it is only 1 cup, then you’d only need to replace it with 1/2 cup flour and 1/2 cup water.

  6. Linda Christie says:

    Hi Lisa I would like to make a gluten free starter. Would gluten free flour work as well normal flour? Never done this before, but wd like to try.
    Thanks Linda

    1. Lisa Bass says:

      Yes.

  7. Roxanne Huseman says:

    Lisa, I am going to try your starter dough recipe. My question is, after seeing all this stuff on grams and using a scale, when you say 1 cup of flour and 1 cup of water, do you mean a literal measuring cup of each thing? I have to get some success here, I’m getting very discouraged.

    1. Nancy says:

      I have researched converting US measurements into metrics. You can use the search engine you want and you have to be specific as to flour or liquid. I know 1c flour is between 120g – 125g. 1c water is 227g. King Arthur has a very nice conversion chart. It breaks many specific ingredients such as all the different flours.

  8. Mary says:

    I’m on day two. While at work, it doubled in size (husband sent a picture). When I arrived home, it was back down to where I started. When I took the lid off, it was definitely thick and bubbly, so I stirred and poured out half, then added another cup of unbleached flour and filtered water. Is that normal for it to deflate?

    1. Lisa Bass says:

      Yes, it will only stay risen for a certain amount of time.

      1. naomi white says:

        For ratios to feed the sourdough starter what do you recommend because feeding it to a 1 to 1 ratio can make it very acidic

        1. Lisa Bass says:

          I use a 1-1 ratio.

  9. Gail M Boettger says:

    5 stars
    I love my, your starter and love the recipes. after many years my started went bad.. no idea why today I shall start again. thanks for always giving us more ideas of how to use the starter and discard. Also thanks for your patience for those who ask the same question you have answered over and over in the comment section. Patience is a virtuous woman. Prov. 31 10 –
    God Speed!!

  10. Mindi says:

    Is the day 1 starter suppose to be really thick? I have a scale and weighed out 100 gram of whole wheat flour and 100gram of water.

    1. Lisa Bass says:

      Yes, that is fine.

      1. Denise Saggio says:

        I purchased several copies of your book Daily Sourdough. I started working through the book starting with the starter. I made my starter following the instructions on page 80-81. I found that my starter was very liquidy and not very bubbly. After seven days and not much in the way of results, I abandoned that starter and vowed to try my hand at it again. I am not sure what I am doing wrong. I also made sourdough english muffins on pg 189. The dough for the English muffins was very dry and I had to throw it out. The recipe called for 2 1/2 cups of AP flour but converts it to 600 grams. I looked at the conversion chart on pg 35. Based on this chart, 2 1/2 cups of flour should be 300 grams not 600 grams, which is double the required flour for 2 1/2 cups of flour. I made this recipe with adjusted flour measurement, and the English muffins were great. Was this a typo in the recipe? Was the flour doubled but not the rest of the ingredients accidentally?

        1. Lisa Bass says:

          Yes, that is a typo! The newer additions of the book have been corrected. Sorry about this.