Here's How to Know if You're Sourdough Starter Is Ready for Baking (2024)

Meghan Splawn

Meghan Splawn

Meghan was the Food Editor for Kitchn's Skills content. She's a master of everyday baking, family cooking, and harnessing good light. Meghan approaches food with an eye towards budgeting — both time and money — and having fun. Meghan has a baking and pastry degree, and spent the first 10 years of her career as part of Alton Brown's culinary team. She co-hosts a weekly podcast about food and family called Didn't I Just Feed You.

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updated Apr 1, 2020

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Here's How to Know if You're Sourdough Starter Is Ready for Baking (1)

You’ve been tending to your brand-new baby sourdough starter for a good week or more, feeding it daily, and giving it a warm, comfortable place to rest. Maybe your starter is lively and happy, producing a yeasty aroma and plenty of bubbles. At this point, you’re likely wondering: Is my starter ready for baking bread?

The answer depends on a lot of factors, including the flour you’re using, how warm your kitchen is, and, most importantly, how much time you’ve put into your starter. Luckily, there’s one test that eliminates any guesswork. Here’s how to know if your starter is ready to bake with.

The Double Volume Test

If your starter doubles in volume within four hours of feeding, your starter is ready for bread making. The best way to track this is to mark your starter’s height right after you feed it. You can put a rubber band around the container, mark the spot with a piece of tape, or even make a mark with a dry erase marker. Set a timer for four hours and check on it — if it’s grown twice as high as your mark, it’s ready to bake with.

At this point, you’ll want to act immediately and start your leaven (the first step in the sourdough bread process). If you wait, your starter will deflate.

Here’s our recipe: How To Make Sourdough Bread

The Float Test

We’d be remiss not to tell you about another test: The float test is simpler, but less reliable than the volume test. Add 1 teaspoon of your starter to at least 1 cup of a room temperature water. If it floats, your starter is ready for baking. The issue is that some starters, especially those made with rye or whole wheat flour, can be ready for baking and not float, which is why we recommend the double volume test.

Remind Me: How Long Does It Take to Build a Healthy, Happy Starter?

If you’re starting a brand new starter from scratch, it will need 7 to 10 days before it’s ready for bread baking. The first four to five days will be spent getting your starter active and bulking it up. After day five, you’ll begin discarding some of the starter and continuing to feed it, during that time the bacteria and yeast in the starter will become stronger and more robust.

Make sure you give your starter plenty of time to build a healthy colony of yeast and bacteria. Wait at least a week before you try testing it, and then rely on the volume test for best results. If you’ve got the itch to bake before your starter is ready, consider making biscuits or baking focaccia with your starter’s discard.

Here's How to Know if You're Sourdough Starter Is Ready for Baking (2024)

FAQs

Here's How to Know if You're Sourdough Starter Is Ready for Baking? ›

You should wait at least 2-4 hours or until the starter is at its peak before you use it in your baking. Can you use sourdough starter after it falls? Yes you can use sourdough starter after it falls. It's best to use it at its peak when the yeast colony is at its greatest, but using it after it falls is also possible.

How long before you can bake with a sourdough starter? ›

You should wait at least 2-4 hours or until the starter is at its peak before you use it in your baking. Can you use sourdough starter after it falls? Yes you can use sourdough starter after it falls. It's best to use it at its peak when the yeast colony is at its greatest, but using it after it falls is also possible.

How long should sourdough sit before baking? ›

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.

How many times should I feed my sourdough starter before baking? ›

Do I have to feed my sourdough starter twice a day? No. You can scale back to once a day or even scale up to three times a day, whatever works for you and your schedule. I like to feed it at least once a day to keep it strong and ready for baking.

What should sourdough look like when baked? ›

The outer crust of your sourdough bread should be crispy, crackly, and have a glossy, caramelized brown finish. The key to achieving a healthy crust is getting sufficient steam while baking, as it keeps the outer crust moist while the inside cooks.

What does day 4 of a sourdough starter look like? ›

On Day 4, your starter will usually not rise, and you may see a few bubbles on the surface of your starter, and it may smell like old cheese or other strange odors.

How to prepare sourdough starter for baking? ›

BUILD UP ENOUGH SOURDOUGH STARTER FOR BAKING

If using measuring cups, combine 1 part starter, 1 part water, and a little less than 2 parts flour. For instance, ¼ cup starter, ¼ cup water, slightly less than ½ cup flour. Mix vigorously. Cover the container and let starter sit for 8-12 hours.

Do you have to discard sourdough starter every time you feed it? ›

Experts recommend feeding a starter twice daily. And at each feeding, you hold onto 1/2 cup of your original starter, discard the rest, and then add its same weight in water and flour. With this schedule, you'd discard almost a cup of sourdough starter every day.

Can you leave sourdough starter overnight? ›

If you bake couple of times a week or once a week, best to move the starter in the fridge. You would then remove it from the fridge for feeding ahead of preparing the dough. Can I leave my starter out overnight after feeding it? Yes, if you have just fed it.

Should I spray sourdough before baking? ›

Another option for adding extra moisture to the dough before baking is to liberally spray the dough with water before placing it inside the Dutch Oven. You can spray with an atomiser or even paint water on the dough with a pastry brush. This is a common method to increase the blisters that form on the sourdough crust.

Why do you chill sourdough before baking? ›

Ideally, you can proof sourdough in the fridge for up to 36 hours, or even longer if your dough will tolerate it. You don't want to have the gluten structure break down or for the dough to use up all of its energy before it hits the oven. This will result in poor oven spring.

How much should sourdough rise before baking? ›

Some recipes call for the dough to expand in volume by as little as 30% while others suggest a full-on 100% increase. Before I decide on the exact volume increase I will track, I want to know what the difference is.

Why is my sourdough starter bubbling but not rising? ›

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 long to leave sourdough starter in oven with light on? ›

If you want to use the light in your oven to keep your sourdough starter or your dough warm, temp the inside space after 30 minutes or an hour of the light being on. You may not have this problem, but if your oven does end up getting too hot the heat can kill your starter, which would be a huge bummer!

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