Mardroeme

In The Witcher 3: Wild Hunt

Mardroeme is a type of mushroom. Warriors who ate mardroeme were said to transform into beasts when consumed by battle rage.

“

I know the smell. A mushroom - mardroeme.
Mardroeme? Never heard of it.
Mardroeme have anything to do with berserkers?
You've another name for it on the Continent. Psilocybe, I believe?

”

~ in-game dialogue

Gallery

• 

  Mardroeme gwent card

In The Witcher computer game

Psilocybe
A rare hallucinogenic mushroom, favored by the hierophant of the Druids' Grove
Description
Type	Special ingredient
Source	Swamp cave
ID	it_quest_170

The psilocybe is a mushroom which druids employ in their rituals, it is not at all useful in the alchemy witchers practice. The Herbalism skill is not required to gather psilocybes.

The hierophant asks Geralt to get a psilocybe mushroom so he can lure the remaining Salamandra into an ambush. Apparently this would make fisstech even more powerful than it is, so it makes for a very good bait for the planned surprise attack. This must be the distilled ingredient.

This item is never found in the game, it is only described in a journal entry. Only the mushroom itself — — is a "concrete" game item.

Sources

• The hierophant.
• Only found in the cave in the Swamp in Chapter III (as the active ingredient of the psilocybe mushroom).