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 1187 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
Save this recipe!
Just enter your email and get it sent to your inbox! Plus you’ll get new recipes from us every week!

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




2,961 Comments

  1. Kathy Lynn Bartley says:

    My starter is on day four. It has a really foul smell. Is it over fermented? It is almost doubling in size daily. Should I start over?

    1. Lisa Bass says:

      Sounds like it is fermenting really well. That’s great. Sourdough starter always has a smell to it. That’s part of the fermenting.

  2. Sharon says:

    My mom used to make sourdough pancakes that were so sour I didn’t like them. Is there a way to prevent it from having a strong tangy flavor?

    1. Lisa Bass says:

      Yes, a freshly fed starter helps and make sure there’s no hooch that gets mixed into the starter.

      1. Lea says:

        Lisa,
        What is hooch?

        1. Lisa Bass says:

          It is an alcohol substance that forms on top of your starter. It’s just letting you know that your starter is hungry and wants to be fed again. The hooch can be poured off the top or mixed in if you want to create a more sour taste.

  3. Aimee says:

    I’m wondering what size of jar you recommend for this starter? I have mine in a 28.7 fl oz jar and I’m worried that it will be too small once it starts to grow. I’m on day 2 and after discarding half and adding the flour and water, the jar is a little over halfway full. Thanks!

    1. Lisa Bass says:

      I like to use a quart sized jar.

      1. Kim says:

        I want to do this do I really toss half in the trash? Or can I put half in another jar?

        1. Lisa Bass says:

          You can store it in another jar for discard recipes!

  4. Yulisa Terrón says:

    5 stars
    Tried and true! I have used this recipe twice before, now on my third time. I have let my baby finish on purpose because of stress, but I want to keep it going for good this time around. I have tried other people’s recipes for making my own starter, but always come back to yours. Thank you for sharing your knowledge 🙏.

  5. Jenny says:

    I am getting ready to start this process. I have a couple of questions.
    1. My home is only 68 is that warm enough for the starter?
    2. Can I cover with loose plastic wrap instead of a tea towel? I have dogs and dont want their hair in it.

    1. Lisa Bass says:

      Yes, to both.

    2. Christa Wilwert says:

      Day 3 and I’m already sitting with my head down and can’t stop crying. All I want is fresh bread. Why am I having such a hard time with this.

      Day one I started with one cup of water and one cup of flour. Day two I threw away half of my mixture then added 1c of water and 1c of flour. Day 3 just got home from work and it is EVERYWHERE! Is my house to warm? What did I do wrong? What should I do now? Please help I really don’t wanna give up on my first try.

      1. Lisa Bass says:

        It must mean that you have a lot of wild yeast in your house! It can help to move it to a bigger jar and then put it on top of a plate to catch any over spill you have next time.

    3. Melissa says:

      How will I know that I discarded exactly half when making the starter? And when you say feed it with 1 cup of flour, do you have it in grams?

      1. Lisa Bass says:

        You can just eyeball it.

  6. Kim France says:

    I am attempting the sourdough voyage and I baked my 1st loaf on Sunday. I was so excited, it is edible (not delicious) and looks like a bellybutton. I have been on and off with getting my starter to rise, so I may have jumped the gun on baking with it. I tried another loaf that I baked this morning, which was VERY sticky, but it looked like it had more rise and had that more of a tangy taste. The dough stuck to my Banaton, I had to peel it off and I floured it (Can the burlap type lining be washed in the washer.) Do you have any suggestions to get my starter stronger. I am using King Arthur Bread Flour.

    1. Lisa Bass says:

      I’m thinking that you could be over fermenting the dough! If it loses its shape and becomes really sticky, that is a tell sign of over fermenting.

  7. Gigi says:

    I forgot to feed on the 3rd day. Should I feed now and continue on? I hope I didn’t messed it up.

    1. Lisa Bass says:

      No, you may just have to feed an extra day or two.

  8. lisa heier says:

    5 stars
    HI! I am in the caribbean and making your starter and am on day 1. Just peaked at it and it seems to be separating the water and flour like a paste. Thought it was hootch but must be water. Ideas? Scrap it and start a new one?

    I’ve made this starter before in Canada with no problems and it is now 5 years old. Love your recipes

  9. Raina Lovelady says:

    5 stars
    Easy and yummy

  10. Deb says:

    I just realized that I used bleached all purpose flour. Will that work?

    1. Lisa Bass says:

      I would use unbleached.