Location: The Lodge
Obtained: Speak with Mancubus (obtainable anytime after getting The Horror in the Woods main mission)
Talk to Harriet
Head to the Dustbound Archives and speak with Harriet at her desk.
Silence the Book Club
Head upstairs to the right of Harriet and follow the walkway around to defeat the brothers.
Pick up Library Card
Retrieve the library card dropped by one of the brothers.
Reach the Forbidden Stacks
According to Harriet, the book we are searching for is in the Forbidden Stacks so head north towards the objective. When you reach the objective, use the library card next to the gated door. Enter through the newly opened door.
Destroy Frozen Bodies
Melee the 5 frozen bodies clustered together.
Take Valve
Pick up the valve.
Place Valve
Place the valve in the barred room on the second floor. To reach this room, you will need to head through the red lit vent shaft on the second floor.
Shoot Pipe
Shoot the pipe above where the frozen bodies were multiple times to release a stream of fire.
Protect the Nibblenomicon
Defeat the enemies that spawn.
Pick up the Nibblenomicon
Pick up the book from the pedestal.
Talk to Harriet
Head back and speak with Harriet then hand over the book.
Kill What Was Once Harriet
Defeat Harriet.
Pick up the Nibblenomicon
Retrieve the book.
Return to Mancubus
Head back to the Lodge and talk with Mancubus.
Place the Nibblenomicon
Place the book on the bar.
Pick up Cilantro
Pick up the cilantro off the floor.
Add a Tbsp of Cilantro
Place the cilantro in the cauldron hanging over the fire.
Sample the Xylourgos Queso
Pick up the cheese from the cauldron and feed it to the book to complete the quest.