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Harmless🍽️ Edible

🍄 Bay bolete

Imleria badia · Boletacées

🧠 To remember it“Bay that turns blue, no net on you” — a bay bolete has a smooth stem; if it has a netted pattern, it's not a bay bolete.
Bay bolete — Imleria badia

🔍 Identify it without mistakes

An excellent edible mushroom often compared to the Penny Bun (King Bolete). You can identify it with a simple reflex: its tubes turn blue when bruised, a process that reverses upon cooking. Velvety to smooth bay-brown cap, smooth brownish stem without a net pattern (reticulation), and yellowish-green tubes and pores that stain distinctly blue when pressed before returning to normal during cooking.

  1. bay-brown to chestnut-brown cap, velvety then smooth, often slimy in wet weather
  2. yellowish-green tubes and pores that turn distinctly BLUE when pressed with a finger or cut
  3. smooth, brownish stem without a visible reticulation/netting (unlike the Penny Bun)
  4. whitish flesh, barely turning blue when cut (much less than the pores)
  5. olive-brown spore print
  6. often grows under conifers, sometimes under hardwoods
Sizecap 5-15 cm, stem 5-10 cm
Floweringsummer-autumn
Habitatmainly coniferous forests, sometimes deciduous, on acidic soils

⚠️ Not to be confused with

Satan's bolete (Rubroboletus satanas)toxique

To tell them apart: Satan's bolete has a grayish-whitish cap (never bay-brown), a bright red stem with an orange reticulation, and an unpleasant smell as it ages; its bluing reaction is instant and much more intense

Bitter bolete (Tylopilus felleus)non toxique mais immangeable (amertume extrême)

To tell them apart: the bitter bolete DOES NOT stain blue (unlike the bay bolete) and has a clearly visible dark reticulation on the stem; its flesh tastes intensely bitter

🍽️ Eating it

Partschapeau, pied
Seasonété-automne
Tasteclose to the Penny Bun but milder, firm texture

Preparation : always cooked; the bluing of the pores disappears during cooking, with no effect on taste; pan-fried, dried

Sources (3)

No entry replaces a certain identification in the field, or medical advice. When in doubt: don't eat it. If ingestion is suspected: poison control or 112/911.