Dried mushrooms definition covers dehydrated fungal products reduced to low moisture content to concentrate flavour, extend ambient shelf life and reduce weight for transport, with species such as porcini, shiitake and chanterelle traded widely in this form.
In trade practice
Moisture content is a primary specification parameter, and buyers typically require a certificate of analysis confirming it alongside rehydration ratio, which indicates yield in use. Slice integrity, absence of insect damage and aroma retention are assessed visually and organoleptically at intake. Radioactivity monitoring may apply to wild-harvested European species under national or buyer-specific programmes. Mislabelling of species is a known commercial risk and buyers may request DNA verification for premium varieties.
In a specification
A dried mushrooms specification states species, moisture limit, rehydration ratio, slice or piece size grade, permitted defect levels and any radioactivity or pesticide residue testing requirements, referencing applicable EU maximum residue level regulations.