On use, kills all enemies on screen with the lowest maximum HP, causing them to leave behind a puddle of white creep and erupt into a fountain of white tears for 4 seconds.
The tears each deal 2/11ths of Isaac's damage, and each fountain will create tears at a rate of 6 per second (1 tear every 1/6th of a second).
Hedonist's Cookbook contributes towards the Bookworm transformation.
Notes
Hedonist's Cookbook will affect all enemies that share the same maximum HP.
There is a radius around Isaac in which Hedonist's Cookbook will not target enemies that are outside of — this radius is approximately slightly less than the width of a normal-sized room.
Hedonist's Cookbook is a reference to the cookbook titled Natural Harvest, of which the recipes involve the use of semen.
If Hedonist's Cookbook is used without any valid targets, a voice clip of a man saying "hmm~" will be heard.
This sound byte originates from the homoerotic film Boy Band, specifically one scene featuring dialogue from the adult film actor Steve Rambo that became popularized through gachimuchi-style parody videos and remixes.
Hedonist's Cookbook was originally planned for the Tainted Treasure Rooms MOD, being the tainted version of Anarchist Cookbook before being reworked to be included in Fiend Folio: Reheated.
The sprite for Hedonist's Cookbook still exists in the files of the Tainted Treasure Rooms MOD.