When black spots are a red flag: mold and what to look for
Not every dark spot is harmless. Mold growth is identified as a genuine warning sign on puff pastry — though the detailed criteria for distinguishing mold from the benign causes above were not fully available in the source consulted.
As a general food safety principle, mold on pastry products is typically accompanied by other signs beyond color alone: an off smell, a fuzzy or powdery texture, or discoloration that spreads unevenly across the surface rather than appearing as isolated specks. When in doubt about a product’s safety, the safest course is not to consume it.
The key open question left by available information is precisely where the line falls between a harmless dark speck and early mold — a distinction that matters most for pastry stored for several days or purchased close to its use-by date. Anyone regularly working with puff pastry would benefit from consulting official food safety guidance from their national food agency for clear storage and inspection criteria.
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