Sourdough starter is alive, which means it doesn’t always behave exactly the way we expect.
One day it’s overflowing from the jar. The next, it barely moves.
If you’re new to sourdough, it can be difficult to know what’s normal and what’s a sign that something is actually wrong.
Here are 12 common sourdough starter problems and what you can do about them.
1. My Starter Isn’t Rising
A healthy, active starter should generally rise after feeding, but temperature, feeding ratios, flour choice, and the condition of the starter can all affect how quickly that happens.
If your kitchen is cool, try moving the starter somewhere comfortably warm—not hot.
Give a newly reactivated or young starter time, too. It may need several feeding cycles before it becomes predictable.
2. My Starter Rises and Then Falls
Good news: this is usually completely normal.
Your starter consumes its available food, rises as fermentation produces gas, reaches its peak, and eventually falls.
A line of dried starter above the current level is often evidence that it already peaked while you weren’t looking.
3. There’s Liquid on Top
A dark or grayish liquid can develop when a starter has gone a while without feeding. It’s often called “hooch.”
It can be a sign that your starter is hungry.
Feed the starter and consider adjusting your feeding schedule if it happens frequently.
4. My Starter Smells Like Acetone
A sharp smell reminiscent of acetone or nail-polish remover can also happen when a starter needs food or its feeding routine isn’t keeping up with fermentation.
Refresh it with regular feedings and observe how it responds.
5. My Starter Smells Sour
It’s sourdough!
Tangy, yeasty, fruity, fermented, and mildly acidic aromas can all occur in a healthy starter.
You’ll eventually become familiar with what your starter normally smells like.
6. My Starter Isn’t Bubbly
Bubbles are evidence of fermentation, but don’t judge your starter based on one feeding.
Temperature and flour can make a noticeable difference.
Mark the level of your starter immediately after feeding with a rubber band or marker. That makes it much easier to see whether it actually rose.
7. My Starter Is Too Thick
Hydration matters.
If you’re feeding by weight using equal amounts of flour and water, the starter may still look thicker than you expect depending on your flour.
That’s okay.
Consistency can range from thick batter to something closer to a paste.
8. My Starter Is Too Runny
A starter can become looser as it ferments.
But if it’s extremely runny immediately after every feeding, check your measurements.
Using a kitchen scale is much more reliable than measuring flour and water by volume.
9. My Starter Has a Dry Crust
This usually happens when the surface is exposed to too much air.
Use a clean container with a loose-fitting lid or another appropriate cover that prevents debris from entering while accommodating fermentation.
10. My Starter Has Pink, Orange or Fuzzy Growth
This is different.
Visible mold or pink/orange discoloration is a reason to discard the starter.
Don’t simply scrape visible mold off and continue using the rest.
When in doubt about obvious spoilage, starting over is much cheaper than getting sick.
11. I Forgot to Feed My Starter
Don’t panic.
Established starters can be surprisingly resilient, particularly when refrigerated.
Inspect it carefully for spoilage. If there are no concerning signs, a few regular feedings may bring an established starter back to its usual activity.
12. I Feel Like I’m Doing Everything Wrong
Almost every sourdough baker has felt this way.
Your starter doesn’t have to look exactly like someone’s 15-second social media video.
Learn its rhythm.
Feed it consistently.
Watch how long it takes to peak.
Notice how temperature changes its behavior.
Eventually, you’ll stop wondering whether your starter is “working” and start recognizing what it’s telling you.
Don’t Have a Starter Yet?
You don’t have to build one completely from scratch.
At Lettuce Live Living, we offer dehydrated sourdough starter that can be reactivated at home.
Once it’s awake and active again, you can keep it going with flour, water, and regular care.
Sometimes the easiest way to start learning sourdough is simply to start.
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