Sourdough Starter Troubleshooting: 7 Common Problems, Solved
Almost every “failed” starter we’ve seen in our workshops wasn’t failing at all — it was just misunderstood. Here are the seven issues we hear about most, and what to actually do.
1. “No bubbles yet”
Usually just cold or young. Move the jar somewhere warmer (24–26°C / 75–78°F), keep feeding on schedule, and give it 2–3 more days before judging.
2. “It smells strange”
A sharp, tangy, even vinegary smell is normal — it usually means the starter is hungry. Feed it. The only real red flag is fuzzy mold or a pink/orange tint: then discard and start fresh.
3. “There’s liquid on top”
That’s “hooch” — harmless alcohol that forms when a starter is hungry. Pour it off (or stir it in for extra tang) and feed. It’s a signal, not a problem.
4. “It rose, then collapsed”
That’s exactly what starters do — they peak and fall. A collapse doesn’t mean death; it means you missed the peak. Try feeding a bit more flour, or catch it earlier next time. Bake when it’s at or near its peak.
5. “It worked for days, now it’s flat”
Check what changed: colder weather? Different flour? New water? Starters are consistent creatures. Return to the routine that worked and it will come back.
6. “I forgot to feed it”
A day or two of neglect is forgivable. Discard most of it, feed the small remainder, and repeat for 2–3 days. Starters are remarkably hard to kill.
7. “It’s bubbly but my bread is dense”
That’s usually a dough issue, not a starter issue — most often baking before the starter hit its peak, or under-proofing the dough. Do the float test: a spoonful of starter that floats in water is ready to bake with.
Still stuck?
Bring your jar (and your questions) to a free live Q&A with Chef Efrat — real answers about your actual starter.