You finally got a sourdough starter. Now what? (2024)

Love sourdough, but looking for a bit more flexibility and ease when you bake with a starter? In The Casual Sourdough Baker, PJ shows you just how wonderfully stress-free sourdough baking can be, from simple but richly flavored loaves to countless easy ways to use your discard. If you're just beginning your journey, our Sourdough Baking Guide lays out the basics you need for success — whether you decide to become serious or go casual!

* * *

You’ve wanted to learn to bake sourdough bread for the longest time. But starting a starter from scratch? “Wow, that can take a week or more and quite a bit of attention; do I really want to go there?”

But wait — someone just gifted you with some of their starter. Or you’ve decided to buy one that’s already mixed and ready, needing only a couple of feedings to get it up to speed. Awwright, sourdough bread here we come!

Then you realize there’s still that gray area between receiving your new starter and actually using it to make bread. Dealing with starter for the first time is kind of like bringing a newborn baby home from the hospital. You’ve read all the books and thought you were ready, but now that the baby is actually here: “WHAT DO I DO?”

First, relax. Your “baby” is going to be fine. Like all babies, your starter requires warmth, food, and attention.But unlike human infants, whose needs are pretty much nonstop, your starter needs very little attention; once you feed it, it can sleep happily in the back of your fridge for days (even weeks) at a time.

You finally got a sourdough starter. Now what? (2)

PJ Hamel

To feed starter you received from a friend ...

Let's assume your friend has gifted you starter in storage mode (i.e., not having been fed over the past 24 hours). Like a baby, you need to first feed your new starter, then let it rest in a comfy spot. Here’s what to do.

Feed with flour and water

Take 1/2 cup (113g)* of the starter (discarding any additional starter) and place it in a medium-sized bowl: stoneware, glass, plastic, doesn’t matter what it’s made of (though if you use metal, be sure it’s stainless steel).

*If your friend has given you less than a half cup of starter (though, really?), it's OK. Go ahead and follow these instructions anyway, using the small amount of starter you've received. Bottom line, once it's been established (as has your new arrival, courtesy of your friend), sourdough starter will survive and thrive under all manner of maintenance feedings (which is what you're giving it here). It's only when you want to bake naturally leavened bread with it (bread with no added commercial yeast) that you need to pay close attention to how much and when you feed your starter. For the details on readying your starter for baking naturally leavened bread, see Putting your starter to work.

You finally got a sourdough starter. Now what? (3)

PJ Hamel

Add 1/2 cup (113g) lukewarm water (tap water is fine) and a scant 1 cup (113g) unbleached all-purpose flour. Stir until everything is well combined.

Cover the bowl; it shouldn’t be completely airtight but you also don’t want the starter drying out, so a kitchen towel isn’t suitable. Try a reusable bowl cover or plastic wrap.

Time for a nap

Place the bowl in a moderately warm spot, somewhere between 68°F and 78°F. Options: Heat your microwave for 1 minute (to about 80°F), then place the bowl inside. Or place the bowl in your turned-off oven with the oven light on. Like a baby, your starter wants to be cozy, neither super-warm nor shiveringly cold.

You finally got a sourdough starter. Now what? (4)

PJ Hamel

After 8 hours (wouldn’t you love your new baby to sleep for 8 hours at a time?!), take a peek at the starter. Has it become bubbly and doubled in size? If so, great; it's ready to stash in the fridge or use in a recipe. If not, you'll want to feed it again.

Keep feeding your starter until it's vigorous and healthy

Give your starter another meal: Scoop out 113g (discarding the rest), place it in a bowl, feed it with 113g each unbleached all-purpose flour and lukewarm water, keep it warm, and wait 8 hours or so for it to grow.

If after its second feeding it hasn't doubled in size within 8 hours, don't give up; your new starter just may need some extra TLC. Continue feeding as directed above. In order to keep your schedule sane, move to feeding just twice a day, every 12 hours or so.

You finally got a sourdough starter. Now what? (5)

PJ Hamel

You can leave your fed starter in the bowl during this process, or do as I do: Transfer it to a 32-ounce straight-sided glass jar, such as a wide-mouth quart-sized canning jar. Loop a rubber band around the jar at the height of the starter, then measure how tall the starter will be when it’s doubled and loop another rubber band there. When it reaches the second rubber band it’s doubled in size.

Once your starter is reliably doubling in size within 8 hours of being fed, it's ready to bake with — or store for future use. If you plan on refrigerating your fed starter, let it rest at room temperature for 2 hours after its feeding before stashing it in the fridge.

If after three to four days of feeding your starter doesn’t double within 8 hours of being fed, I’d recommend ditching it and buying a vital, healthy starter from King Arthur.

To feed fresh starter from King Arthur ...

As always, King Arthur does everything possible to guarantee your success: Just follow the feeding directions in the booklet that comes with the little jar of live starter you purchased, and your new baby will start to grow within hours — and grow, and grow!

If you haven’t yet bought your starter, here’s a preview of what you’ll do once it arrives.

Having fed a new starter more than once, here’s my suggestion: Begin in the evening, around or just after supper. That way, your starter will be ready to feed again the next morning, right around or just after breakfast. Unlike most new babies, this one is perfectly content to sleep through the night.

You finally got a sourdough starter. Now what? (6)

PJ Hamel

To begin, open the jar of starter; it’ll probably look a bit limp and soggy in the bottom of its container. That’s perfectly OK; it’ll perk up once it’s fed.

Decant and feed

Pour 1/4 cup (57g) of lukewarm water over the starter in its “travel jar.” By lukewarm, I mean just barely warm to the touch; nothing you’d want to take a bath in. Screw on the cap and shake-shake-shake to combine the starter and water. Then pour the resulting cream-colored liquid into a medium-sized (at least 2-quart) bowl or other roomy container.

You finally got a sourdough starter. Now what? (7)

PJ Hamel

Follow the directions in your booklet, using 1 cup (227g) lukewarm water and about 2 cups (227g to 241g) unbleached all-purpose flourfor the starter's first feeding.Cover the bowl with your favorite reusable cover (or plastic wrap) and set it someplace warmish (68°F to 78°F is about right). Let the starter rest, undisturbed, for anywhere from 8 to 24 hours; the warmer your kitchen, the more quickly your starter will grow.

Give the starter its second meal: discard all but 1/2 cup (113g) and feed the remainder with 1/2 cup (113g) each flour and water (you'll find the details in your booklet). Your starter should now double within 8 hours of this second feeding. But if it doesn't?Feed it once more. Once it doubles and bubbles within 8 hours of feeding, it’s ready to use in a recipe or go into the refrigerator for long-term storage, where you’ll only need to feed it once a week.

You finally got a sourdough starter. Now what? (8)

Kristin Teig

Some people like to keep their starter on the counter, at room temperature, and feed it twice a day. The advantage is, your starter will be active and ready to bake when you are. The disadvantage? Well, having to feed it twice a day. I prefer the more flexible fridge routine.

What’s next?

That’s it! Your baby is healthy, fed, and happy to nap until needed. Ready to take the next step and actually bake a loaf of bread? See our blog post, Putting your starter to work.

Finally, what about all that extra starter you’re supposed to discard along the way? Despite its name, you can save and use it in all kinds of recipes, from biscuits and pancakes to crackers and cake. Check out our sourdough discard recipe collection for inspiration. And if you’re uncomfortable with the amount of discard you’re generating, there’s a simple solution: reduce the size of your starter. See our instructions for maintaining a smaller sourdough starter.

Cover photo by Kristin Teig.

You finally got a sourdough starter. Now what? (2024)

FAQs

You finally got a sourdough starter. Now what? ›

I usually feed it a maintenance feeding of 50 grams flour and 40 grams water. The starter will spring back by the next day. You may need to feed it 2 or 3 times to get it active enough for a bread bake but it will come back to life like nothing ever happened.

What to do after someone gives you a sourdough starter? ›

Cover with either a tea towel or a glass lid. I like using a glass lid, because a towel tends to get really messy. Allow to sit of for 4-12 hours before using in a recipe, once it has about doubled in volume. If not using for baking, feed about 12-24 hours after last feeding or place in the fridge.

How do I activate my sourdough starter? ›

INSTRUCTIONS FOR ACTIVATING A SOURDOUGH STARTER
  1. Add packet of starter to 1 Tbsp. ...
  2. After 12-24 hours, feed the starter with an additional 2 Tbsp. ...
  3. After 12-24 hours, feed the starter with an additional 1/4 cup of flour and 1/4 cup water. ...
  4. After 12-24 hours, feed the starter with an additional ½ cup of flour and ½ cup water.
Jun 23, 2022

What does sourdough starter look like after you feed it? ›

After feeding your starter, it should double or triple in size with bubbles visible on the surface and sides of the jar.

What is happening when you make sourdough starter? ›

Sourdough starters begin working when you mix liquid and flour. Mixing liquid into flour activates the friendly bacteria and wild yeast living in both your flour and your surrounding environment. Once activated, these microorganisms produce carbon dioxide bubbles, which make your bread rise.

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

It would be best if you discarded some portion of your starter each time you feed it unless you want to continue to let it grow. Eventually, you need to discard the used “food” (flour and water) that's been used to sustain your starter during the last fermentation period.

How long does a starter stay active? ›

You can keep a “peaked” starter in the refrigerator for about 12 hours (sometimes more), and still use it directly in your mix. You do not need to let it come up to room temperature. If your starter is well past peak (a few hours) and visibly falling, you can give it a “refresh” feeding to reactivate it.

How do I know if my sourdough starter is active enough? ›

This is really simple: drop a small amount of starter in a small glass of water. The idea is that if it floats, you have an active starter and if it sinks, it's not ready.

What is the best flour for sourdough starter? ›

The best flour blend for creating a new sourdough starter is 50% whole-meal flour (whole wheat or whole rye) and 50% bread flour or all-purpose flour. I recommend a 50/50 mix of whole wheat flour and bread flour. Why do you need to use these two types of flour?

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 often should I clean a sourdough starter jar? ›

I wipe the top and rim of my starter jar every time I feed, which helps keep most of the jar clean. Transfer your sourdough starter to a new, clean jar whenever your current jar becomes overly crusted with sourdough starter. I typically do this once every two weeks.

Can I use my starter if it doesn't float? ›

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.

How to tell if sourdough starter is bad? ›

Typical signs of food spoilage and mold include pink, orange, or green colors, white fuzzy spots, or sometimes areas that are darker with white areas on top. If you see any of these signs, I would recommend throwing your starter away and creating a new one.

How long after feeding sourdough starter can I use it? ›

Fed sourdough starter refers to a starter that has been fed flour and water (preferably by weight). You should feed the starter equal or greater than its weight after discarding a portion. You should wait at least 2-4 hours or until the starter is at its peak before you use it in your baking.

Do I feed my starter after using it? ›

Once your starter is alive and active it only needs to be fed when you want to use it.

What are three top tips when making sourdough starter? ›

Top 10 Sourdough Starter Tips for Success
  1. Maintain a Schedule to Feed your Sourdough Starter. ...
  2. Know How to Store a Sourdough Starter. ...
  3. Maintain a Small Sourdough Starter.
  4. Use Sourdough Discard for Less Waste.
  5. Know How to Revive a Sourdough Starter. ...
  6. Measure your Ingredients by Weight.
Mar 26, 2024

How do you use someone else's sourdough starter? ›

You can either split your starter into a new jar for your friend and feed both as normal ( about 100g of starter and 100g each of water and flour) or spilt some off and give them the discard to feed up. Generally, you don't need more than about 50g of starter to pass on to really get a new starter going.

How to feed starter someone gave you? ›

You don't want to give it too much — about the same amount that you've been given. So if you've been given 100 grams of discard starter, give it 100 grams of warm water and 100 grams of flour (we'll talk about types of flour later) and let sit at room temperature with plastic wrap over it to keep insects out.

How soon after feeding sourdough starter can I use it? ›

Fed sourdough starter refers to a starter that has been fed flour and water (preferably by weight). You should feed the starter equal or greater than its weight after discarding a portion. You should wait at least 2-4 hours or until the starter is at its peak before you use it in your baking.

What to do with day 1 sourdough starter discard? ›

You can always use this discard by directly mixing it into a dough for baking. Your discard, as long as it's in good shape, will leaven any bread dough just as well. The discard is just like a levain you would make for a recipe. The only difference is it's the same makeup as your starter.

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