Genuine natural cordyceps is read as one connected insect-and-fungus specimen. Check a full larval body with numerous rings, eight pairs of legs and four prominent central pairs; a darker fungal structure tapering from the head; a natural junction; earthy yellow-brown colour; dry texture; and, where already broken, a pale fibrous interior with a dark central mark.
The larval body supplies the first identity test
Natural cordyceps begins with a ghost-moth larva colonised by a fungus. The dried body should remain plump enough to show biological segmentation rather than a perfectly smooth mould. Rings become finer near the head and broader through the middle. Repeated mechanical ridges, a flat mould seam or fluorescent colour calls for closer examination.
There are eight pairs of legs: three near the head, four through the middle and one near the tail. The middle four are normally the most visible. Missing legs can result from damage, so the assessor compares multiple specimens. A manufactured copy may reproduce the number while failing natural spacing, depth and surrounding tissue.
The fungal head must grow from a convincing junction
The fruiting structure is darker than the insect body, begins thicker at the base and narrows upwards like a dry twig. A moderate length preserves the balanced appearance valued in trade grading. A very long structure can accompany a more depleted body, yet length does not decide authenticity or geographic origin on its own.
At the head, tissue should transition continuously. Glue shine, drilled holes, wire or a toothpick can expose assembly. Handle existing fractures rather than breaking sound specimens. A natural broken section may look pale yellow-white with a small dark V-like, horseshoe or dot-shaped centre; a uniform paste interior does not fit the same structure.
Use smell and dryness as supporting evidence
Sound dried cordyceps can carry a mushroom-like, earthy and slightly marine aroma. Sourness, strong perfume, sulphur-like smell, damp clumping or coloured powder indicates processing or deterioration that needs investigation. Dry specimens feel light and crisp, while an unexpectedly heavy box may include moisture, foreign matter or dense packaging.
Kam Hoi Shing compares several levels of the box, packaging records and claimed origin before assigning a grade. Do not taste unknown material or soak it for a home test, since both actions create safety and appraisal problems. Authentication is strongest when body, fungal structure, junction, cross-section, aroma, dryness and provenance all point in the same direction.
Examine a representative broken specimen without creating one
If the lot already contains a naturally broken cordyceps, its section can show how the body, central mark and fungal junction continue internally. Compare that piece with intact specimens from several layers, but do not snap a complete example solely for inspection. A convincing section still needs the external ring pattern, legs and head emergence to agree. Record any wire, adhesive or inserted support separately, since a repair can affect one specimen without defining every piece in the box.
