How to Build a Sourdough Feeding Schedule
A practical guide to building a sourdough feeding schedule that fits your life, whether you bake every day or once a week. Learn how to sync your starter's peak with your baking plans.
How to Build a Sourdough Feeding Schedule
One of the most common frustrations in sourdough baking isn’t the dough itself. It’s the starter. Specifically, getting your starter to be ready when you actually need it, rather than peaked and falling by the time you get around to mixing, or still sluggish an hour before you wanted to start bulk fermentation.
The fix isn’t a stricter routine. It’s a smarter one. A good feeding schedule isn’t about feeding at the same time every day regardless of your plans. It’s about understanding how your starter behaves and building a rhythm that puts it at peak exactly when your baking calls for it.
What “Peak” Actually Means and Why Timing Matters
Your starter goes through a predictable cycle after each feeding. It starts slow, accelerates as the yeast and bacteria consume fresh flour, hits a maximum rise, then gradually falls as the food supply runs low. That maximum point is peak activity, and it’s when your starter is strongest, most vigorous, and best suited for leavening dough.
Using starter at or near peak produces predictable, well-fermented dough. Using it too early means your starter hasn’t fully developed and your bulk fermentation will be sluggish and unreliable. Using it past peak means you’re introducing a more acidic, already-declining culture into your dough, which can affect both fermentation timing and flavor in ways that are hard to diagnose later.
The goal of any feeding schedule is simple: make sure your starter peaks when you need it.
The Two Main Scenarios: Daily Baking vs. Weekly Baking
Your schedule depends almost entirely on how often you bake.
If you bake several times a week, keeping your starter at room temperature and feeding it once or twice daily makes sense. You’re using it regularly enough that the maintenance overhead is low, and the starter stays active and well-conditioned from frequent feeding. A once-a-day feeding at the same time each day works fine if your kitchen temperature is consistent and you’re baking on most days. Twice a day is common among high-volume home bakers or anyone in a warm kitchen where the starter cycles through faster.
If you bake once a week or less, a room-temperature starter is more work than it’s worth between bakes. Store your starter in the fridge, feed it once a week to keep the culture healthy, and bring it out the night before a bake for a revival feeding. This is how most casual sourdough bakers operate, and it works very well once you have the timing dialed in.
Neither approach is better. The right one is whichever fits your actual baking frequency.
Building a Weekly Baking Schedule
This is the most common home baker scenario, so it’s worth laying out in detail.
Monday through Thursday: Starter lives in the fridge. No action required. It’s dormant but alive, sustained by the residual flour from its last feeding.
Friday evening: Pull the starter from the fridge and let it come to room temperature for an hour or two. Discard down to 20 to 50g, then feed with your regular ratio (1:3:3 or 1:5:5 works well here for an overnight schedule). Leave it on the counter overnight.
Saturday morning: Your starter should be at or near peak, typically 10 to 14 hours after a larger-ratio feeding at room temperature. Mix your dough, use the starter at peak, and put the remaining starter (or a fresh-fed portion) back in the fridge until next week.
The key variable is your kitchen temperature overnight. A cool kitchen (65 to 68°F) may push the peak to 12 to 14 hours. A warmer one (72 to 75°F) may peak closer to 8 to 10 hours. The CrumbDesk Starter Feeding Calculator can give you a timing estimate based on your specific temperature so you know whether to feed earlier or later on Friday to hit Saturday morning reliably.
Building a Same-Day Baking Schedule
For bakers who want to mix and bake on the same day, the schedule compresses but the logic is the same: feed your starter so it peaks at the moment you want to mix your dough.
A typical same-day schedule might look like this:
7:00am: Feed starter with a 1:1:1 or 1:2:2 ratio. Leave at room temperature.
11:00am to 1:00pm: Starter peaks (timing depends on temperature and ratio). Mix dough.
11:00am to 6:00pm: Bulk fermentation. The CrumbDesk Bulk Fermentation Calculator gives you a reliable window based on your dough temperature and starter percentage.
6:00pm: Shape, cold proof overnight in the fridge.
Next morning: Bake from cold.
The beauty of this schedule is that it doesn’t require an early wake-up. Feed before you leave for work or right when you wake up, and your starter is ready by late morning. Adjust the feeding time and ratio based on how warm your kitchen runs.
The Role of Feeding Ratio in Schedule Control
Feeding ratio is the most powerful tool you have for controlling when your starter peaks. A smaller ratio (1:1:1) produces a fast peak, often 4 to 8 hours at room temperature. A larger ratio (1:5:5) pushes the peak to 12 hours or more.
This means you can deliberately push your peak earlier or later simply by adjusting the ratio, without changing anything else about your routine.
Running late and worried your starter will overpeak before you’re ready to mix? Try a slightly larger ratio next time to extend the window. Starter always taking too long to get going in your cool kitchen? Drop to a smaller ratio to accelerate the timeline.
Once you start thinking about feeding ratio as a scheduling tool rather than just a quantity question, you have a lot more control over your baking day.
Keeping Notes Makes Everything Easier
This sounds tedious but it pays off fast. For the first month or two of baking, keep a simple log: what time you fed, what ratio you used, what your kitchen temperature was, and when your starter peaked. You don’t need anything fancy, a sticky note on the jar works fine.
After a handful of bakes you’ll have a real-world map of how your starter behaves in your specific kitchen across different seasons. That information is worth far more than any general guideline because it’s calibrated to your actual conditions.
When Your Schedule Gets Disrupted
Life happens. You forget to feed. You fed on schedule but plans changed and you can’t bake. The starter went into the fridge later than planned.
Sourdough starters are more resilient than their reputation suggests. A missed feeding won’t kill a healthy, established starter. If your starter sat too long between feedings and smells strongly acidic or shows a layer of dark liquid (called hooch), pour off the hooch, discard most of the starter, and do a couple of regular feedings to bring it back to good condition before using it for baking.
If you fed on schedule but need to delay your bake, put the starter in the fridge before it peaks. Cold slows fermentation dramatically, and your starter will hold near its peak state for a day or two in the fridge without significant decline. Pull it out a few hours before you need it and let it finish peaking at room temperature.
Connecting Your Starter Schedule to Your Baking Plan
The most reliable way to build a feeding schedule is to work backward from your planned bake time. Decide when you want to mix your dough. Count back by your starter’s typical peak time at your kitchen temperature. That’s when you feed.
From there, your bulk fermentation window, shaping time, and bake schedule all flow forward in sequence. If you need help mapping out the bulk fermentation portion of that chain, the CrumbDesk Bulk Fermentation Calculator lets you enter your dough temperature and starter percentage and get a realistic time range for that stage.
And if your batch size changes week to week, the CrumbDesk Recipe Scaler makes it easy to adjust your starter quantity along with the rest of your ingredients so everything stays in proportion.
Building a feeding schedule that works is mostly a matter of observation in the first few weeks and small adjustments after that. Once you know how your starter behaves in your kitchen, you’ll feed almost on instinct and rarely miss a timing window.
To take the guesswork out of quantities and timing for your next feeding, plug your details into the CrumbDesk Starter Feeding Calculator and get a clear, personalized recommendation.
FAQ
How often should I feed my sourdough starter? It depends on how often you bake. Daily bakers typically feed once or twice a day at room temperature. Weekly bakers do better storing the starter in the fridge and feeding once a week, with a revival feed the night before a bake. There’s no universal answer, only what fits your actual schedule.
Can I feed my starter at different times each day? Yes, with some flexibility. Starters are living cultures, not machines. Feeding within a few hours of your usual time won’t cause any harm. That said, consistency helps you predict when the starter will peak, which makes scheduling your bakes easier. Erratic feeding times make timing harder to read.
What happens if I miss a feeding? Nothing permanent for an established starter. It will become more acidic and may develop a layer of liquid on top (hooch), but it won’t die from a missed feeding or even a few days of neglect. Discard most of it, feed twice in a row to refresh the culture, and it should be back to normal activity within a day.
How do I know if my starter is ready to use for baking? It should be at or near peak: risen to its maximum height, domed on top, full of bubbles, and passing the float test (a small spoonful floats in water). It should smell yeasty and slightly tangy, not strongly acidic or alcoholic. Using it in this window gives you the most predictable fermentation.
Should I feed my starter before or after refrigerating it? Feed it before refrigerating. This gives the culture a fresh supply of food to sustain it during cold storage. A freshly-fed starter going into the fridge will stay healthy longer and bounce back faster when you pull it out than a depleted starter that went in on an empty stomach.
How long can a starter stay in the fridge without feeding? A healthy, well-established starter can go two weeks or more between feedings in the fridge without serious harm. Beyond two weeks, you may need a couple of revival feedings to get it back to full activity before baking. Many experienced bakers have successfully revived starters left for a month or longer, though recovery takes more time.
Does kitchen temperature affect how often I need to feed? Significantly. Warmer kitchens accelerate fermentation, which means your starter cycles through its food supply faster and needs more frequent feeding to stay in good condition. A kitchen at 80°F may need twice-daily feedings. A cool kitchen at 65°F can often get by with once a day. Refrigeration removes temperature as a variable entirely and is the most reliable option for infrequent bakers.