From Pathfinder Lost Omens Character Guide, which isn't enabled.

Lastwall Soup

ITEM 1

Price 3 gp

Usage held in 1 hand

Bulk L

Category elixir

Activate 1 minute (Interact)

Crimson Reclaimers make this rich, hearty soup using herbs that baffle the senses of the undead. A bowl of Lastwall soup is as nourishing as a full meal.

In addition, for 1 hour after consuming a bowl of Lastwall soup, you gain a +2 item bonus to Stealth checks and DCs against undead.

Effect: Lastwall Soup

Pathfinder Lost Omens Character GuideOGL