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 1057 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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Recipe Rating




2,110 Comments

  1. Bethany says:

    I donโ€™t know what the problem is, but my starter will not grow. Iโ€™m using unbleached flour, I changed the ratios to 3/4 flour and 1/2 cup water, itโ€™s in a warm place. But I donโ€™t know why itโ€™s not growing. Itโ€™s been almost 2 weeks now. I think after today I may give up on it.

  2. Jennifer C. Glidewell says:

    My Amazon cart is full of dutch oven, starter container, tea cloths, all the things! Can’t wait to get started! I’ve really had a hard time lately and your videos have helped tremendously, I lost my daughter 5 years ago and I’m raising her two children, who are teens now. I bought a 45-foot RV 3 years ago and when we made this move, I said “no television!” I committed to a more purposeful, less stress way of life. We do not have ANYTHING in our home that we do not absolutely love or need. Simple living. I could be your mother but I’ve already learned so much from you. Keep them coming and God bless your beautiful family.

  3. Ria says:

    If I use whole wheat flour for the starter, do I have to use that also always for the feedings or can I switch later to bread flour or all purpose flour? I’d like just to use up the whole wheat flour I have in the house.

    1. Lisa Bass says:

      You can switch later on!

  4. Judy Pilley says:

    I’m ready to put it asleep in the fridge. Do I take out half of it to refrig and discard the other half or do I put all of in the fridge. Is there any need to feed it before I store it? Not quite sure of the instructions.

    Love your site!
    JP

    1. Lisa Bass says:

      You can put it all in the fridge and then discard before the next use! Or if you have a discard recipe, you could use that. A lot of times, I will use it for pancakes!

  5. Tracy says:

    My husband and I are trying to a make starter. Every attempt has failed! Exactly what do you mean by filtered water? We have used several different bottled waters, but none actually say filtered on them. Help! We are beginning to feel like sour dough dummies!

    1. Mandy says:

      I fill a gallon jug with from my sink. We have a Brita filter that attaches to the faucet, and I use that for my filtered water needs for fermentation and other fun kitchen stuff. That way I can keep the jug at room temp, which most fermented things seem to prefer.

      For what it’s worth, I had many failed attempts at a starter before it worked. Don’t give up!

  6. Erin says:

    5 stars
    Thank you so much for breaking this down for a sourdough novice! I can’t wait to start feeding my family healthier bread!

  7. Victoria says:

    5 stars
    I have your cookbook and love it! Question: if I want to use einkorn, are there any different steps to take since itโ€™s a different flour? Even when actually making a sourdough loaf? Thank you!

  8. Anne says:

    Hello, Thank you so much for this and all your recipes! I finally have the courage to try the sourdough starter. I’m on day 5 and my starter is separating with water on top and no bubbles. Day 2-4 it separated a little but there was a lot of bubbling. The smell is about the same and no discoloration.
    When I did the discard on day 2-4 I did stir it before discarding then added the flour and water and mixed with a whisk.
    Do I stir it again tonight and add the flour and water? Or do I need to start again?
    Thank you

  9. Barb Pothuisje says:

    We recently lost power due to a hurricane and I lost our starter. Iโ€™m on day 3 right now of this recipe. Iโ€™m using King Arthur flour. The starter is quite thick and the smell isnโ€™t like my previous batch. Will that improve as the process goes on? This is my first time actually making a starter.

    1. Lisa Bass says:

      Yes, it will improve. Are you feeding it a 1:1 ratio of flour and water?

      1. Barb Pothuisje says:

        Yes

  10. Sylvia Koelsch says:

    Hi, I’m on day 3 of .y starter. When I get to the e d and need to put in fridge, do I feed it 1/2 c flour and water once a week?

    1. Lisa Bass says:

      Yes!