How To Make Sourdough Starter

Tastes of Lizzy T participates in affiliate advertising programs. We may earn a commission when you make a purchase through links on our site.

If you’ve ever wondered how to make sourdough starter, this is your complete guide! Traditional 7 day sourdough starter with perfect results, every time. Just 5 minutes and you are on your way to sourdough bread, pancakes, cakes and more.

Table of Contents
  1. Does sourdough really take a week?
  2. Tools Needed to Make Sourdough Starter
  3. Two Key Ingredients for Any Sourdough Starter
  4. How To Make Sourdough Starter
  5. When is starter ready to bake with?
  6. And for fun…name your starter!
  7. What and When to Feed Sourdough Starter
  8. How much sourdough starter to keep?
  9. Books that Will Help You Learn Sourdough
  10. How to Make Sourdough Starter Recipe
  11. Sourdough Recipes We Love
  12. Sourdough Discard Recipes

What do you do when your spring isn’t turning out anything like what you thought it would be? You bake bread. Because the aroma of freshly baked bread brightens even the longest, darkest days.

For the past two years I’ve been tackling two types of sourdough. One is a sweet sourdough, the starter needed for this Amish Friendship Bread. The other sourdough is a classic sourdough that bakes up beautiful loaves of bread, biscuits, waffles, pancakes and even a chocolate cake.

sourdough starter in a pint jar

Today we’re sharing everything we’ve learned about sourdough. Although we used to make a lazy sourdough using commercial yeast, we’ve realized just how easy (and absolutely wonderful) a traditional sourdough starter with just flour and water is.

Does sourdough really take a week?

You’ll want to plan a week to get this sourdough active enough to rise a loaf of bread. Yes…a week seems like a long time, but it is 100% worth it. And once that week is done, you can easily have a loaf of homemade artisan bread anytime you want.

Tools Needed to Make Sourdough Starter

There are a few things you’ll need to have on hand if you want your bread to turn out in the best possible way.

  • kitchen scale – You can measure by volume, but for the best results, we recommend investing in a kitchen scale. It’s worth it.
  • sourdough jar – These jars hold sourdough beautifully. I love that they are glass so you can see the fermentation. They give lots of room for the starter to double. And they seal nicely when you need a break from baking bread. 

Do you absolutely need a kitchen scale? I’ve had readers tell me that in the olden days they did not have kitchen scales so measuring by volume is fine. And in theory, that is true. But when you are getting started and learning how much flour and water to add, it’s best if it is very precise. Then as you become a pro you can measure by volume if you’d like.

Did you know?

Don’t store your sourdough starter in a metal container. Not all metal is created equally and acids react to metals. Use glass for the safest results.

Two Key Ingredients for Any Sourdough Starter

It’s important to use unbleached flour and non-chlorinated water for sourdough starter. 

  • Non-Chlorinated Water. Chlorine can kill the yeast as it tries to grow. Use filtered water for best results.
  • Unbleached Flour. Bleached flour does not have as much natural yeast as unbleached flour does. Will bleached flour work? It may. But when you are beginning and want to have no issues pop up, it is best to work with unbleached flour.

How To Make Sourdough Starter

We’re going to talk about the sourdough process in days. Plan for 7 days to work with the sourdough. It won’t take long at all each day…less than 5 minutes after you get it going!

A note before you begin. Our starter begins with unbleached whole wheat flour. The only time you’ll use whole wheat flour is on day 1. After that you can use regular unbleached flour.

Day 1. 

Start with a clean glass jar. I use a pint size mason jar when I am beginning a starter, but a weck jar or other glass jar will be fine too. You’ll just want it to be able to hold about 2 cups so that it can handle the rise of the starter.

Place the jar on the kitchen scale. Turn the scale on and make sure it is reading 0 grams. If it isn’t, press the “tare” button to get the display to read zero. 

first step of making a sourdough starter

Add 60 grams of whole wheat flour and 60 grams of warm, non-chlorinated water. The mixture will be very, very think. It won’t be impressive at all to start. But just wait. 🙂

day 1 of sourdough starter

Cover the jar loosely with plastic wrap and let it sit at room temperature, of in a spot where the room temperature is slightly warmer.

Day 2.

Check the starter. You’re looking for bubbles to form. If you don’t see any, it is ok because they come and go fairly quickly. Don’t mix it. Just check it, then let it sit again for another 24 hours.

day 2 of sourdough starter

Day 3. 

This is the first day you’ll feed the starter. Feed it no matter what it looks like. At this point the starter is going to be “stretchy”.

stretchy sourdough starter in a jar and on a spoon

Pull out half of the starter and throw it away. Use your kitchen scale to again add 60 grams of all purpose, white, unbleached flour (remember…you only use whole wheat that first day)  and 60 grams of warm water. 

day 3 sourdough starter

Mix it all together. It will still be really thick. Cover loosely with plastic wrap.

Day 4, 5, and 6. 

Discard half of the starter and feed as you did in Day 3. You’ll do the same thing each day no matter what the starter looks like. Discard half, and feed with equal amounts of flour and warm water.

day 4 sourdough starter

As these three days pass you’ll notice a natural rise and fall to the starter. This is an important process to observe because it will tell you when the starter is ready to bake with and when it is hungry. You can use a rubber band (or a piece of tape) on the jar to mark where the starter is when you feed it, then how it doubles as the starter grows. 

day 5 sourdough starter
day 6 sourdough starter

Day 7.

Your starter should be very bubbly and you are almost ready to bake! It should have a sweet and tangy aroma. It should not be a sharp or harsh smell. It should look light and airy.

If your starter does not look like this, you might want to continue the feeding process for a few more days before using it.

When your starter looks like this, it means it is ready to start baking the baking process!

top view of bubbly, active sourdough starter

When is starter ready to bake with?

Starter is ready when it is bubbly and in the “doubled” stage. If you are wanting to bake bread and the starter is “deflated”, feed the starter, wait a couple of hours and it should be doubled and ready to bake with.

Try the float test

Drop a little bit of starter into a glass jar. If the starter floats, it is ready to bake with. See the picture below.

sourdough starter in a glass jar

And for fun…name your starter!

Once you have your “sourdough baby” it’s time to name it! We named ours Clint. You know…for “Clint Yeastwood”. Because we’re corny like that! 🙂

What and When to Feed Sourdough Starter

If you are storing your starter at room temperature, you’ll need to feed it daily. Depending on how much you keep, you can discard about half the starter (use it in sourdough pancakes) and feed it equal amounts of the unbleached all-purpose flour and non-chlorinated water.

If you don’t use your sourdough often, seal it and store it in the refrigerator. Feed it weekly with equal amounts of flour and water. There will be a cloudy liquid on top of the starter. That is called “hooch” and it means your starter is hungry. Stir that liquid in, then feed. Do this weekly. I like to set a reminder on my phone to go off once a week. That way I always have starter on hand.

Once your sourdough is refrigerated, be sure to remove it from the fridge 12-24 hours before you are ready to bake. Mix it, feed it, then watch for it to bubble. If it doesn’t bubble, discard half of the starter and feed again with equal amounts of water and flour. 

You’ll learn the timing of your own starter and know how long it takes to get it bubbly and active after a few times.

sourdough starter in a sealed jar with name "clint"

How much sourdough starter to keep?

You can replenish your starter after you’ve used some up by adding 25 to 50 grams of flour and an equal weight of water to at least a ¼ cup of starter.

If you have an active starter, it’s so easy to quickly grow more sourdough if you’re needing a large amount. There is no need to keep huge amount of it in your refrigerator. 

And that’s about it! Please share your hints for making sourdough. What have you had success with? I know many of you are pros and can help me along my sourdough journey!

Books that Will Help You Learn Sourdough

Sourdough Starter in a jar with a tag
Sourdough Starter in a jar with a tag

How to Make Sourdough Starter

4.79 from 38 votes
If you've ever wondered how to make sourdough starter, this is your complete guide! Traditional 7 day sourdough starter with perfect results, every time. Just 5 minutes and you are on your way to sourdough bread, pancakes, cakes and more.
Prep Time 20 minutes
Resting Time 7 days
Total Time 5 minutes

Equipment

Ingredients
 

  • 60 grams unbleached whole wheat flour
  • 300 grams warm non-chlorinated water (divided)
  • 360 grams all-purpose unbleached flour (divided)

Instructions
 

Day 1.

  • Start with a clean glass jar. I use a pint size mason jar when I am beginning a starter, but a weck jar or other glass jar will be fine too. You’ll just want it to be able to hold about 2 cups so that it can handle the rise of the starter.
  • Place the jar on the kitchen scale. Turn the scale on and make sure it is reading 0 grams. If it isn’t, press the “tare” button to get the display to read zero.
  • Add 60 grams of whole wheat flour and 60 grams of warm, non-chlorinated water. The mixture will be very, very think. It won’t be impressive at all to start.
  • Cover the jar loosely with plastic wrap and let it sit at room temperature, of in a spot where the room temperature is slightly warmer.

Day 2.

  • Check the starter. You’re looking for bubbles to form. If you don’t see any, it is ok because they come and go fairly quickly. Don’t mix it. Just check it, then let it sit again for another 24 hours.

Day 3.

  • This is the first day you’ll feed the starter. Feed it no matter what it looks like. At this point the starter is going to be “stretchy”. Pull out half of the starter and throw it away. Use your kitchen scale to again add 60 grams of all-purpose unbleached flour and 60 grams of warm water.
  • Mix it all together. It will still be really thick. Cover loosely with plastic wrap.

Day 4, 5, and 6.

  • Discard half of the starter and feed as you did in Day 3. You’ll do the same thing each day no matter what the starter looks like. Discard half, and feed with equal amounts of flour and warm water.
  • As these three days pass you’ll notice a natural rise and fall to the starter. This is an important process to observe because it will tell you when the starter is ready to bake with and when it is hungry. You can use a rubber band (or a piece of tape) on the jar to mark where the starter is when you feed it, then how it doubles as the starter grows.

Day 7.

  • Your starter should be very bubbly and you are almost ready to bake! It should have a sweet and tangy aroma. It should not be a sharp or harsh smell. It should look light and airy.
  • If your starter does not look like this, continue the feeding process for a few more days before using it.
  • Once your starter is light and airy, it's time to bake with it! Place the active starter in a clean jar that it will continue to live in as you feed it.
  • Click here to make our favorite artisan sourdough bread recipe.
Course Bread
Cuisine American
Keyword bread, comfort food

Sourdough Recipes We Love

We’ve had so much fun working with sourdough and creating all the things! Try one of our favorite recipes, both with discard and active starter.

Sourdough Discard Recipes

Still have discard? You’ll love these recipes!

About Julie Clark

I'm Julie Clark, CEO and recipe developer of Tastes of Lizzy T. With my B.A. in Education and over 30 years of cooking and baking, I want to teach YOU the best of our family recipes.

Get 5 Classic Recipes with a Deliciously Secret Twist

You might also like

Join the Discussion

Subscribe
Notify of
guest

280 Comments
Inline Feedbacks
View all comments

Cody
2 years ago

Hi I’m confused, when I first started mixing everything together the original recipe called for 2 cups of unbleached flour, 2 cups of warm water and a packet of yeast and it would take about 48 hours. The page refreshed and now its saying just use water and flour and it will take 7 days. Is there any way to get the old recipe back?

Rebecca
2 years ago

After the 48 hours, or at any other ‘feeding’ time, when adding equal parts of flour and water, does the water, again, need to be between 95 – 100 degrees? Can it be filtered water kept in the refrigerator?

MLSSRN
2 years ago

why do you have to discard half…seems wasteful can’t i just keep it all and give half away at the end?

Anna Silva
2 years ago

I was wondering if you can use instant yeast for the sourdough starter? I was only able to find instant not the active dry one.

Michelle Jaelin @nutritionartist
2 years ago

5 stars
This is the best blog I’ve read on sourdough starter. You make it so much easier to understand than other blogs. Thank you for your great post!

Matt
2 years ago

Hi. When I started making the starter, things were looking really great. I would say that after day 3, the starter was looking like your day 7 pictures. Over the last few days, the starter really isn’t increasing in size. I do see bubbles on top, but not throughout the the entire mixture like I was seeing earlier in the week. Do I need to start over?

Kristen
2 years ago

After I had mixed all the ingredients together, I realised I used white flour and forgot to use whole wheat flour! It has now been 24hrs, there is bubbling but I’m worried that it won’t last until tomorrow for the first feeding. Should I take out half and give whole wheat now and then wait another 48 hours? As if it is starting from the beginning

Julie
2 years ago

Is there any reason I can’t use ALL whole wheat flour? Not a fan of food with the nutrition stripped out.

Britt
2 years ago

5 stars
I have followed the directions for the most part, meaning day one I was over 3 grams in water so I added an equal amount of flour. My starter is bubbling but not doubling. I have also noticed that it seems thin. I am using a kitchen scale to measure. It has been rather cool in the house and I am not sure if that is causing complications. Any ideas what I have done wrong? I am on day 7 and it is not passing the float test, the consistency of the started has remained the same throughout.

Ellemar Karen
2 years ago

Neither option below really fits my comment. I made mine years ago and it’s simple routine by now. Here’s a tip that might be helpful to the uninitiated that I learned early on. During the starting process and again during the feedings, you make a strong point about weighing the various ingredients. HOWEVER unless you want to have to transfer the culture to another container to weigh it on a scale so you know the exact weight of half to use/discard, it is extremely helpful to know the weight of the container in which you are growing the culture (weigh… Read more »

Ellemar Karen
2 years ago

I’m a grammar nut who has overextended herself today. Please note the “your” in the 2nd sentence should be “you’re”.

Anonymous
2 years ago

Thank you Julie for this fool proof method that doesn’t waste so much flour!

Christina Cloutier
2 years ago

I am on day 7 and its runny. It rose and fell, and produced bubbles like it’s supposed too. Should I start over, feed it again, or is it ok to use runny?

Tom
2 years ago

Thank you so much for posting your recipe and for doing such a great job with very clear, step-by-step directions. And for pictures. I had (have?) high hopes, as yours would be the fourth starter I’ve tried to start over the last couple of weeks. I have followed directions meticulously, so yes, started with whole wheat flour, weighed out everything, used all-purpose on subsequent days, etc. Day three looked fine, as the starter rose well above the rubber band. Days 4 and 5 had no real growth. But pics looked like yours, so not worrying. Day 6, no growth, but… Read more »

Hayley
2 years ago

Hi Julie
I’m new to starting sourdough starter. I’m allergic to wheat so will the starter be ok to just start with unbleached flour?
Thank you for this great article. Can’t wait to bake my first loaf.