Mud Wen
From Dungeons of Dredmor Wiki
Mushroom
When consumed, invokes 
Unpleasant Poison.
Grows in muck and often mistaken for its medium, the Mud Wen is strangely resistant to transmutative energies.
Worth 50 zorkmids. 
B:82 S:32 
B:104 S:22 
B:122 S:12
[edit] Crafting
It can be used to create 
Grog, 
Verdant Poison.
