Feed Your Starter
Everything you need to know from your first feeding until your starter is ready to bake.
Just got your culture going—whether from scratch or a dehydrated packet? This sourdough starter guide will show you exactly how to feed sourdough starter with confidence. We’ll simplify sourdough starter feeding, explain what healthy activity looks like, and answer the big question: how often to feed a sourdough starter at different stages. With clear steps and real-world tips, you’ll build a strong, reliable starter you can bake with again and again.
If you’re wondering whether you’re feeding your starter correctly, you’re not alone. Feeding is the step that confuses new bakers the most. The good news is that once you understand what your starter is doing, it becomes simple.
Many beginners expect every feeding to produce dramatic growth. In reality, a healthy starter goes through a predictable cycle of rising, peaking, and falling as it develops strength.
This guide will walk you through exactly what to do, what to expect, and how to know when your starter is ready to bake.
⏱ Reading time: About 8 minutes
Last Updated: August 2026
Four Simple Steps to Feed Your Sourdough Starter
1. Discard
Remove all but the amount of starter you want to keep.
Discarding keeps your starter manageable and gives the remaining yeast plenty of fresh food.
2. Feed
Feed equal weights of:
• Starter
• Flour
• Water
Examples:
25g starter
25g flour
25g water
OR
50g starter
50g flour
50g water
3. Mix
Mix thoroughly until no dry flour remains.
Scrape down the sides.
Cover loosely with a solid lid.
Mark the starting level with a rubber band.
4. Watch
Now let your starter do the work.
Resist the urge to stir it, feed it again, or constantly check on it.
As the yeast consumes fresh flour, it produces carbon dioxide, causing your starter to rise.
Eventually it runs out of food, reaches its peak, and begins to fall.
That entire rise, peak, and fall is one complete feeding cycle.
Quick Tip
Your starter doesn’t need another feeding until it has had time to eat the flour from the previous feeding.
More feedings don’t make it stronger.
Patience does.
What to Expect from Your Sourdough Starter
Days 1–3
Small bubbles.
Little rise.
Sometimes none.
Completely normal.
Around Day 3
Many beginners suddenly see a huge rise…
Then nothing.
This is called the false rise.
It’s completely normal.
Days 4–14+
Activity becomes inconsistent.
Some days it doubles.
Some days it barely moves.
Keep feeding.
Your yeast population is still developing.
Mature Starter
Eventually your starter develops a predictable rhythm.
Rise. Peak. Fall. Repeat.
This consistency—not age—is what tells you it’s ready.
How Often Should You Feed a Sourdough Starter?
If it hasn’t peaked…
Wait. Don’t feed early.
If it peaks in about 24 hours
Feed once daily.
If it begins peaking in 8–12 hours
Feed twice daily if you’re preparing to bake.
If it’s in the refrigerator
Feed only when preparing to bake again.
Quick Tip
Your starter eats food—not time.
Feed based on what your starter is doing rather than following a schedule.
If it hasn't peaked yet, wait.
Patience builds stronger starters.
How Do I Know My Sourdough Starter Is Ready to Bake?
Doubles consistently
Usually doubles (or more) within 4–8 hours after feeding
Has bubbles throughout
Smells pleasantly tangy or yeasty
Rises and falls predictably
Does these things consistently
Watch your starter—not the calendar.
Common Sourdough Starter Mistakes
Feeding too often
Feeding before peak
Keeping the starter too cold
Making it too runny
Restarting too soon
Watching the clock instead of your starter
Keeping Too Much Starter
Many beginners keep hundreds of grams of starter and end up wasting lots of flour.
Keeping a small starter is easier, less expensive, and just as effective.
Sourdough Starter FAQ
Should I feed twice a day?
Only if your starter is already peaking quickly and you’re preparing to bake.
Can I use whole wheat flour?
Yes. Whole wheat and rye often increase activity, but unbleached all-purpose flour is excellent for daily maintenance.
Do I have to throw away discard?
No. Once your starter matures, save discard for pancakes, crackers, waffles, pizza dough, muffins, and more.
How long until my starter is ready?
Most starters become reliable within 2–3 weeks, but watch your starter—not the calendar.
Can I use tap water?
Usually yes.
If your tap water contains a strong chlorine smell, filtered water may work better.
Can I switch flours?
Yes.
Starters adapt very well to different flours over time.
Why does my starter smell like acetone?
That's your starter telling you it's hungry.
Feed it and allow it to complete a full feeding cycle.
Can I feed without discarding?
Technically yes, but your starter will quickly become too large and require much more flour.
Discarding keeps your starter healthy and manageable.
Do I have to use a kitchen scale?
A scale gives the most consistent results and is highly recommended for beginners.
Continue Your Sourdough Journey
Temperature Matters
Your kitchen’s temperature sets the pace.
In a cooler room, fermentation slows down, so rising and peaking take longer—totally normal.
In a warmer spot, everything speeds up and your starter can hit its peak much sooner.
That’s why two bakers can do the same thing and see different timelines.
Your starter follows temperature—not the clock. Watch what your starter is doing instead of comparing it to someone else’s.
Join Our Facebook Community
Learning is easier when you have thousands of bakers cheering you on. Join the Clear Creek Sourdough Facebook community to ask questions, share your progress, troubleshoot your starter, and celebrate your first loaf with fellow beginners.
