05/12/2026
If you've ever stood over your starter jar wondering whether what you're seeing is normal or a sign that something has gone wrong, this guide is for you.
If this is your first time on my page, welcome. Give this post a like so more people get to see it, follow along so you don't miss the next one, and save this one because it's exactly the kind of thing you'll want to pull up mid-bake when your starter is doing something unexpected. If you have questions, drop them in the comments. I read every one and the ones that come up most often become the next post.
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One of the most common reasons people give up on sourdough is that something changes in their starter and they don't know what it means. It looks different. It smells strange. It stopped rising. It rose and then collapsed faster than expected. And without knowing what they're looking at, the easiest conclusion to reach is that something is de@d or ruined and it's time to start over.
Most of the time, that conclusion is wrong.
The guide attached to this post walks you through thirteen (13) of the most common things you might observe in your starter, what each one usually means, what to do about it, and what to expect after you've made the adjustment. It's designed to be a quick reference you can scan in the moment rather than something you have to read start to finish every time.
A few things worth highlighting before you save it.
H***h, that grey or dark liquid that pools on top of your starter, is not a sign that your starter is de@d. It's a sign that it's hungry and has been waiting too long for its next feed. Pour it off or stir it in and feed immediately. Your starter will recover.
The quiet phase between days 4 and 6, where your starter seems to go completely flat and life-less after an exciting start, is one of the most misunderstood parts of the entire process. It is normal. It is not de@d. The early bacteria that caused that initial burst of activity are fading, and the stronger, more stable acid-tolerant microbes are quietly taking over. Keep feeding consistently and do not restart.
Fuzzy mold in any colour is the one situation where you do not try to save it. Discard everything, clean your equipment thoroughly, and start fresh. A starter with visible fuzzy mold has lost its ability to defend itself against unwanted invaders and cannot be recovered safely.
And kahm yeast, that thin white film that sometimes forms on the surface, is not mold. It's undesirable and can affect flavour, but it's salvageable. Scoop clean starter from underneath the affected layer, transfer to a clean jar, and feed consistently for a few days before baking with it.
Save this guide. Share it with someone who's struggling with their starter. And remember that almost every problem on this list has a solution that doesn't involve starting over.
As always, I hope this helps someone.
~ Neme's Kitchen
