How To Do The Sourdough Float Test - Hilltop Farmhouse (2024)

Is my sourdough starter ready to bake with? Whether you are new to maintaining a sourdough starter, or you’ve done it all for many years, you’ve probably asked the previous question. Once you get the hang of caring for a starter and baking with sourdough, it will all begin to come more natural to you. For now, continue reading this post to discover one method for determining if your starter is ready: How to Do The Sourdough Float Test.

I’ve created many resources on sourdough:Frequently Asked Questions About Sourdough,,Maintaining and Feeding a Sourdough Starter,What is Hooch? | Sourdough Lessons, andmore! I hope these resources will aid you as you grow more and more confident in caring for and using a sourdough starter.

How To Do The Sourdough Float Test

What is the Sourdough Float Test?

This is a method for measuring the readiness of your sourdough starter in order to achieve a healthy rise. While it’s certainly not a foolproof way to figure out if Your Sourdough Starter is Ready to Bake With, it can be helpful.

How to Do The Test

Place about a teaspoon of the starter into a cup of warm water. Be gentle and don’t stir the starter beforehand. Disrupting the bubbly activity could cause it to sink. You’ll find that either your sourdough starter floats or it settles to the bottom.

If it floats, it should be ready for baking. If it sinks, it likely won’t produce great results if you were to bake with it right away.

How Does the Float Test Work?

The outcome is indicating whether your starter is holding enough gas bubbles to bring about rise.

If it floats, it’s presumably at its peak activity and contains lots of bubbles of carbon dioxide, the result of happy, thriving, natural yeast.

If it sinks to the bottom, the starter is presumably not ready, requiring further time and feedings before use in your sourdough recipes.

Why Did My Starter Sink in the Float Test?

Several factors contribute to the float test not being the most dependable.

A new starter: A young starter hasn’t yet developed the strength needed to rise your bread dough. Keep track of its age, continue a consistent feeding schedule, and keep it in a warm spot to encourage activity.

The bubbles were disrupted: When adding a sample of starter to the water, take care not to stir. Gently transfer with a spoon, and carefully place into the water.

Too much contact can pop those little bubbles, causing even a mature, active starter to fail the test when the sample sinks. This would be an example of a false negative – a failed test with a starter that is ready for a bake.

Type of flour: Some flours aren’t as suitable for the float test. Lower gluten flours, such as whole wheat flour or rye flour, may not build a strong gluten network that holds in those bubbles which cause it to float, yet the starter may very well be ready to go.

Past its peak: If you’ve missed the peak of your fed starter before testing, your sample may not float, yet your bake may rise perfectly well. You’ll know when your starter is at its peak when it is double in size and contains lots of bubbles.

Consistency: The consistency of your starter can influence its results. Perhaps you’ve tested a young, stiffer starter, and it floats. The thicker consistency can allow more bubbles to be trapped and held, yet your starter may not be ready and you’ll have a bad bake. We would call this a false positive.

How To Do The Sourdough Float Test - Hilltop Farmhouse (1)

Maintaining and Feeding a Healthy Sourdough Starter

Read more from this specific blog post right here!

How Often to Feed a Starter

If you bake a lot of sourdough treats you may choose to keep your starter on the counter, at room temperature. While this means feeding it twice a day, it also means your starter’s always ready to go when you are. If you’re a more casual sourdough baker stash your starter in the refrigerator, where you’ll need to feedit just once a week.

Read more aboutright here!

Feeding a Starter that is Stored at Room Temperature

I am not fussy with the feedings I give my starter. You may choose to stick to a more rigid routine and suggestions found through other sources, but my starter is happy and healthy with the way I care for it.

I simply eyeball how much starter I seem to have in my jar and feed itat leastan equal amount of water and flour. You may give it more if desired.

For example, if I have 1 cup of starter, I’ll feed itat least1/2 cup of filtered water and 1/2 cup of flour.

How to ‘Feed’ it:

  1. Addthe needed amount of flour and water to your sourdough starter.
  2. Usea fork or spoon to mix it up until it is well combined.I like using a fork in order to break up any clods of flour (we don’t want those in there!).
  3. Checkthat the consistency is similar to pancake batter.
  4. Coverthe bowl or jar with a tea towel or glass lid.Avoid an airtight lid so that oxygen can work its way into your starter.
  5. Allow to sitof for 4-12 hours before using in a recipe. We want it to double in volume.
  6. If not using for bakingthat day, feed about 12-24 hours after last feeding or place in the fridge.

When to Add More than Equal Parts:

I like to add more than the equal amount of my sourdough when I am running low on starter.

For example, I have 1 cup of starter and I know I want to make a double batch of pancakes later in the day (I’d need 4 cups of starter for that), so I will give my starter and extra large feeding so there will be plenty when I use it later.

Keep in Mind:It never hurts to give your starter a larger feeding than it needs, but always avoid under-feeding it. Inadequate feedings will weaken your starter over time.

Feeding a Starter that is Stored in the Fridge

Putting a sourdough starter in the fridge is like pressing the pause button on the fermentation process, so you do not need to feed it as often as you would a starter left at room temperature. On the counter, it needs to be fed daily, butin the fridge, it only needs to be fed once a week.

  1. Takethe starter out of the fridge; there may be a bit of liquid on top.
  2. Eitherdrainthis liquid off orstir it in, your choice; it’s simply a byproduct of the fermenting yeast.
  3. Feedyour starter according to the “How to ‘Feed’ it” instructions listed above.
  4. Placethe starter back in the fridge until you’re ready to store it at room temperature, use it for baking, or just need to feed it again.

You can even switch back and forth between the refrigerator and the room temperature storage if you use it sporadically. I’ll place mine in the fridge during times when I’m not baking as much and simply bring it out when I know I’ll be using it multiple days in a row.

More Sourdough Info

How Can I Make My Own Sourdough Starter?

Interested in implementing sourdough into your kitchen?Here’severything you need to know to get your sourdough starter going.

All it takes is flour, water, and about 7 days time.

I also answer a few of the most frequently asked questions about sourdough overhere.

How is Sourdough Healthier than Regular Bread?

Read more in depth about the health benefits of sourdough here. I explain four reasons that sourdough is one of the healthiest breads you can consume, as well as describe how the fermentation process of sourdough works.

More on Sourdough

  • 5 Favorite Ways to Use Sourdough Discard
  • Sourdough Recipes for Breakfast
  • Sourdough Mistakes to Avoid
  • How to Convert a Regular Recipe to Sourdough
  • Frequently Asked Questions About Sourdough

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How To Do The Sourdough Float Test - Hilltop Farmhouse (2024)

FAQs

How To Do The Sourdough Float Test - Hilltop Farmhouse? ›

Place about a teaspoon of the starter into a cup of warm water. Be gentle and don't stir the starter beforehand. Disrupting the bubbly activity could cause it to sink. You'll find that either your sourdough starter floats or it settles to the bottom.

How do you do the sourdough float test? ›

To perform the float test, simply spoon some of your starter into a cup of water. If the blob sinks straight to the bottom, the starter has not developed enough to adequately trap carbon dioxide. If it floats on the surface of the water, your dough has enough carbon dioxide to lift your bread.

How do you do the float test? ›

Place your eggs in the water. If your eggs sink to the bottom and lie flat on their sides, they are very fresh. If your eggs stand on one end at the bottom, they are a few weeks old, but still fine to eat. If your eggs float to the surface, they are no longer fresh.

What is the jiggle test for sourdough? ›

Look for Visual Cues: As you progress in your sourdough baking journey, you will get better at recognizing visual cues that indicate a well-proofed dough. The dough should have a network of tiny gas bubbles, a gentle jiggle, a subtle domed top and lastly, should hold an indentation during the “poke test”.

How to test pH of sourdough starter? ›

The pH value can be easily measured using a pH electrode. For dough analysis, an electrode such as the Spearhead electrode which can pierce into the sample is the best sensor. As the pH value is temperature dependent, the sensor measures the temperature as well.

Do you stir the starter before the float test? ›

If you are going to proceed with the float test, it's important you do not stir the starter first. If you stir the sourdough starter, you will disturb all the gas bubbles expelled by the yeast and the starter will not be able to float at all.

Can I overfeed my sourdough starter? ›

Yes, you can overfeed your sourdough starter. Audrey explains: “Every time you add more flour and water, you are depleting the existing population of natural bacteria and yeast.” If you keep adding more and more, eventually you'll dilute the starter so much that you'll just have flour and water.

How accurate is the float test? ›

But, according to Dr. Schaffner, “there is no scientific basis for the egg float test.” So experimenting to see if your egg sinks or swims is not a reliable way to measure its quality.

What is the formula for float? ›

Formulas for calculating Total Float and Free Float are as follows: Total Float = LS – ES (it is also calculated by LF – EF)Free Float = Lowest ES of successors – EF. Free Float = Lowest ES of successors – EF.

What does overproofed sourdough look like? ›

Note: As loaves begin to overproof they lose their height and shape. The crumb becomes more dense. The holes become more ragged and irregular in shape. The crust begins to thin and separate from the crumb.

How to tell if sourdough has risen enough? ›

The dough should visibly start puffing up. With the “poke test” you put some flour on your finger and poke the dough. If it springs back immediately, it needs more time. If it slowly springs back about halfway it is ready to bake.

What is the first proof test for sourdough bread? ›

The dough poke test is a technique performed during the proofing step of the bread-making process that helps you determine when your sourdough bread dough is ready to bake. Gently press your finger into the dough on the top. If the dough springs back quickly, it's underproofed.

How to do a sourdough float test? ›

By dropping a spoonful of your starter into a glass of room temperature water, you'll find that either your sourdough starter floats or it settles to the bottom.

Why is my sourdough starter bubbling but not doubling? ›

If your starter gets completely covered on top with bubbles but does not rise, it is healthy but may just be a wet mix. Try reducing the water in your next feeding and see if you have different results. Also, the type of flour you are using can impede the rise of your starter.

How do I know if my sourdough starter is OK? ›

Take a small spoonful of the starter and drop it into a glass of water. If it floats, it indicates that the starter is sufficiently active and ready for use.

How to do the sourdough poke test? ›

Gently press your finger into the dough on the top. If the dough springs back quickly, it's underproofed. If it springs back very slowly, it's properly proofed and ready to bake. Finally, if it never springs back, the dough is overproofed.

How do you score sourdough for best rise? ›

Be gentle with the dough, but make swift and confident slashes, and don't press down on the dough. Use shallow cuts when making a detailed or more intricate pattern, and one or a few deeper cuts (depending on your design)—to allow the bread to rise and expand during baking.

How do you test sourdough bread for doneness? ›

Using A Thermometer To Tell When Sourdough Bread Is Done

An instant-read thermometer (such as this Lava Tools Javelin Pro) is inserted into the sourdough bread so that the tip goes down to the center of the loaf. Sourdough bread is cooked through at an interior temperature of 205-210 F or 96 - 98 C.

How long should you leave sourdough to prove? ›

To proof them, let them sit, covered, at room temperature for up to 3–4 hours, or let them proof for a little while at room temperature and then place in the refrigerator for 12–15 hours. Or you can speed the process by using a proof box, warm cooler, or slightly warm oven to speed things up.

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