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minor
Overlay (Stroma)
Not contamination
Not contamination - an overgrowth of mycelium that forms a dense mat blocking pin formation. Caused by environmental conditions.
Reference Images
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What It Looks Like
Thick white mycelial mat over casing, prevents pins from forming, looks healthy but too thick
Recommended Action
Gently scratch/score the overlay with sterile fork. Increase FAE. Cold shock may help. Reduce CO2 levels. Usually recoverable.
How to Identify
- 1Thick mat of healthy-looking white mycelium
- 2Covers casing surface completely
- 3No pins can break through
- 4No off-colors or smells
- 5Looks almost like leather
Common Causes
- •Too much CO2 during casing colonization
- •Casing layer too thin
- •Temperature too warm during casing run
- •Premature exposure to fruiting conditions
Prevention Tips
- ✓Maintain proper FAE during casing colonization
- ✓Adequate casing layer depth
- ✓Proper temperature control
- ✓Wait for proper colonization before fruiting
Learn more from external sources:
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