A sourdough starter is often likened to a pet, but unlike a puppy, if you forget to feed it when you’re supposed to, nothing bad will happen. Because even though starters are technically alive, they’re incredibly resilient. Really, a starter is more like a shape-shifting plant — it can be fed daily for maximum activity, the same way you’d water a finicky plant, but it can just as easily go months (months!) in the fridge without a meal, like a cactus in the desert.
If you forgot to feed your starter when you were supposed to (see below for ideal timing), it’s almost certainly going to be OK. Here’s what to do:
First: How frequently do you feed your starter?
Generally, there are two routines you may choose for feeding your sourdough starter:
Twice daily at room temperature:If you’re a regular sourdough baker, the best way to have ripe starter when you need it is to keep your starter on the counter at room temperature and feed it twice daily, about every 12 hours.
Once a week in the fridge:If you are a more casual sourdough baker, it’s easiest to keep your starter in the fridge and feed it once a week. (We recommend leaving it on the counter for a few hours after feeding to start fermenting before returning it to the fridge.) Then, a day or two before you want to bake, give it a couple of feedings at room temperature before using it to bake.
The guidance below applies to both feeding schedules. Please note: If you typically keep your starter at room temperature and aren't going to be able to feed it for an extended period of time —maybe you have a hectic week coming up, or are leaving town for a few days —stick it in the fridge until you're able to return to it. It can last much longer in the fridge without a meal than it can on the counter. Once you get back on a regular schedule, bring it back to room temperature.
Julia A. Reed
If you missed one feeding
Don’t worry — your starter is fine. Just pick back up with your typical routine and your starter will settle in easily. To be safe, give it one or two feedings before you bake with it to make sure it’s at full strength.
If you missed several feedings
Your starter is probably looking a little neglected and acting sluggish. However, it’s almost certainly not dead — it takes a lot to kill a mature sourdough starter! If you store your starter in the fridge, feed your starter once and leave it at room temperature, then monitor its progress over the next 12 hours. (A straight-sided clear container like our Glass Sourdough Crock is perfect for this.) As long as it increases in size over this period of time, it’s still alive. And to get it back up to a healthy and vigorous state, keep feeding it until it doubles in size within 6 to 8 hours. This may take another several feedings and up to a few days.
(Temperature can also affect how quickly starter moves; it will be slower in colder environments and quicker in warmer ones. If you struggle with either of these, a temperature-controlled sourdough home can help regulate your starter’s environment.)
Julia A. Reed
If you missed too many feedings to count (and your starter now has black liquid on top)
That’s still OK! Black liquid on top of your starter looks scary, but in reality, it’s nothing to be concerned about. This thin liquid (called “hooch”) is merely alcohol and water generated by your starter’s wild yeast as it feeds. You can either stir it back into the starter and feed as normal or drain it off and then feed it — the choice is up to you.
Note: Though rare, if your starter has pink or orange streaks, that can be a sign of spoilage. It’s best to throw it out and start again.
As before, resume feedings and keep an eye on your starter’s activity. It may not show any sign of life after the first feeding, or even the first several feedings, but eventually, it should start to bubble and rise. (If it doesn’t, it really is dead — time to start another one or purchase our fresh sourdough starter.) And remember, your starter isn’t back to fully healthy (and ready to bake) until it doubles in size within 6 to 8 hours, so keep feeding until it’s at this level of activity.
Photography by Kristin Teig; food styling by Liz Neily
If your starter is sluggish from neglect, you can add a little whole grain flour like rye or whole wheat to your feedings. The minerals and other food present in whole grains encourage growth in your starter, accelerating fermentation of both the bacteria and the yeast in the starter. This step will help get your starter ready for use more quickly, like revving the gas. Learn more here: Sluggish starter? Add a little whole grain flour.
Pick up everything you need to make your best sourdough bread inour Sourdough Shop collection.
Cover photo by Danielle Sykes; food styling by Liz Neily.
A starter stored in the fridge can be fed once a week. If you plan to use it often, you can store it for up to two months without feeding. When you want to use the starter again, remove it from the fridge for a few hours, then feed it every 12 hours for 36 hours before you make bread with it.
A starter stored in the fridge can be fed once a week. If you plan to use it often, you can store it for up to two months without feeding. When you want to use the starter again, remove it from the fridge for a few hours, then feed it every 12 hours for 36 hours before you make bread with it.
Generally, I have found that a starter will keep for up to three weeks in the refrigerator without a feeding. Two weeks is easy; three weeks is a little dicey, though not impossible; but for anything over three weeks, I'll usually dehydrate my starter.
*Do not try baking with your starter right after feeding it. Allow time for it to grow and feast on the flour before using it. Starters are usually ready to bake with around 4-12 hours after a feeding depending on the amount you feed your starter. The larger the feeding, the more time it needs to ferment.
Otherwise, you will underfeed your starter and it will become acidic and unhealthy. You need to weight your ingredients and discard 2/3 of the weight of your starter (keep 1/3 of total starter weight) to maintain a healthy starter with equal parts.
Don't worry — your starter is fine. Just pick back up with your typical routine and your starter will settle in easily. To be safe, give it one or two feedings before you bake with it to make sure it's at full strength.
It is fine to use un-fed starter however if you use too much starter that hasn't been fed for a while then the resulting bread won't taste as nice and won't rise as much. Sometimes, if it's been a long time and a lot is used, it can even turn the dough to mush.
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.
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.
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.
Premature discarding and overfeeding will weaken your starter and elongate the process. Don't discard and re-feed a weak starter before it shows increasing bubble activity or height from the previous feeding. If you don't see more bubbles or a faster rise each day, skip a feeding, and give it more time.
How often you should feed your starter depends on how much you use it during the week. I would keep it in the fridge if you only use a few times a week. A good idea is to feed it every time you use it, leave it on the counter for 8 hours, and then put it back into the fridge until you are ready to use it again.
Mature sourdough starter aged more than 6 months old should be able to survive unfed on the counter for around 3-4 days without any risk of mold. The caveat here is if the temperature is very hot, this timeframe would be reduced. What is this? A mature sourdough starter will survive unfed in the fridge for months.
Over time it might have a greyish liquid start to collect in it, called hooch. It is a natural alcohol that your starter produces, and it just tells you that it is hungry. You can stir it in the next time you feed or pour it off (this is what I do) and then feed as usual.
Yeast dies at 140°F, and it's likely that your sourdough starter will suffer at temperatures even lower than that. It's best to maintain your starter at comfortable room temperature (around 70°F), though a little higher or lower won't hurt anything.
I wouldn't go more than 24 hours without feeding a very young sourdough starter (it may survive longer than this unfed however you will leave it open to the risk of mold). Mature sourdough starter aged more than 6 months old should be able to survive unfed on the counter for around 3-4 days without any risk of mold.
Your sourdough starter is the foundation of baking sourdough bread. Through proper maintenance and a little attention, it can last indefinitely and provide you with countless healthy and delicious loaves of bread.
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.
Introduction: My name is Rueben Jacobs, I am a cooperative, beautiful, kind, comfortable, glamorous, open, magnificent person who loves writing and wants to share my knowledge and understanding with you.
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