Troubleshooting Common Sourdough Issues (and Their Causes)
Every sourdough baker has been there: you follow the recipe exactly, wait for fermentation, and bake with high hopes, only to get a disappointing loaf.
This is where most people quit — or truly master sourdough. Baking success depends not on talent, but on reading your dough and adjusting accordingly. This guide helps you understand these signs and bake consistent, great sourdough.
A Key Mindset
An “imperfect” loaf is not failure — it is valuable feedback.
Sourdough is a living process. When problems occur, your dough is telling you about your starter, fermentation, temperature, or handling.
Once you learn to read these signs, troubleshooting becomes calm and methodical.
Dense & Heavy Loaf
Cause: Insufficient fermentation or low yeast activity.
- Weak, under-activated starter
- Shaping before fermentation is complete
- Low room temperature slowing fermentation
Fix:
- Fully activate your starter until bubbly and vigorous
- Extend bulk fermentation and final proofing, especially in cool conditions
- Judge dough by its rise, not just a timer
Dough Spreads Instead of Rising
Cause: Dough lacks structure to hold its shape.
- Underdeveloped gluten
- Over-fermentation breaking down gluten
- Lack of support during final proofing
Fix:
- Shape gently to build strong surface tension
- Use a banneton for support if over-fermented
- Proof in proper supporting tools for better height and definition
Overly Sour Flavor
Cause: Excessively long fermentation, especially cold fermentation.
- Too long a cold ferment
- Total fermentation time beyond ideal range
- Poor time-temperature control causing strong acidity
Fix:
- Shorten cold fermentation appropriately
- Feed starter more often to keep it balanced
- Bake at peak fermentation to prevent further souring
Acidity is adjustable — controlling fermentation controls flavor.
Pale & Soft Crust
Cause: Insufficient early oven heat or steam, preventing caramelization.
- Inadequate oven preheating
- Lack of steam during baking
- Opening the oven door too early
Fix:
- Preheat thoroughly for stable high heat
- Use steam or cover dough early in baking
- Use a silicone baking mat for easy transfer and better heat retention
Uneven, Messy Tearing Instead of Clean Scoring
Cause: Scoring fails to provide a clear expansion path.
- Dull blade
- Wrong scoring angle or depth
- Poor timing between fermentation and scoring
Fix:
- Use a sharp lame for clean, smooth cuts
- Adjust angle and depth for clear expansion
- Adjust fermentation to match scoring timing
Scoring guides oven spring — a clean cut ensures better rise and shape.
Dough Sticks to Banneton/Mold
Cause: High hydration or insufficient anti-stick preparation.
- Overly wet, sticky dough
- Not enough flour dusted in the banneton/mold
- Over-fermented soft, sticky dough
Fix:
- Slightly reduce hydration or strengthen folding before shaping
- Dust banneton generously with rice or rye flour
- Use a dry silicone mat to absorb moisture and prevent sticking
