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"Some of these potions have effects almost too gruesome to think about."
—Description[src]

Moste Potente Potions is a book by Phineas Bourne[1] that gives instructions on how to brew various advanced potions. The book is described as having gruesome potions listed inside.

History

Brewing potions

Hermione using this book to brew Polyjuice Potion

In 1992, Harry Potter, Hermione Granger, and Ron Weasley planned to sneak into the Slytherin common room in order to investigate the mystery of Slytherin's Heir, and needed to make Polyjuice Potion so they could disguise themselves as Slytherin students.

Hermione obtained a permission slip to check Moste Potente Potions out of the Restricted Section from Gilderoy Lockhart, claiming that the book contained information on slow-acting venoms that she thought might help her understand what Lockhart had written on this subject in Gadding with Ghouls.

Hermione then spent one month brewing the Polyjuice Potion in Moaning Myrtle's lavatory, which included using two of the ingredients that were stolen from Professor Snape's stores.

Contents

HP-Cos Moste Potente potions

A picture from "Moste Potente Potions"

Moste Potente Potions contains recipes for many dangerous, controversial, and arcane potions, which required advanced skill in potion-making to brew. Gruesome illustrations shows the effects of such potions. The Hogwarts Library accordingly keeps its copy of this book in the Restricted Section.

Two potions known that are included in this book are Polyjuice Potion and Laxative Potion. It may also contain information on slow-acting venoms, but this is uncertain.

Behind the scenes

  • In the film adaptation of Harry Potter and the Chamber of Secrets, the book was found in the regular section of the library.
  • Also in the book, there is a picture (Figure VII) of a woman with a grotesquely large spider on her head, almost worn like an ornament. Whether or not this is an effect of a potion is unknown. It is possible that it is the side-effect of accidentally imbibing a Polyjuice Potion contaminated by spider hairs, similar as to when Hermione was partially transfigured into a cat when her Polyjuice Potion was contaminated with cat hair.

Appearances

Notes and references

  1. 1.0 1.1 See this image.
  2. See this image.


Potions (class)
Wideye-or-awakening-potion
Potioneers
Arsenius Jigger · Damocles Belby · Erica Stainwright · Fleamont Potter · Gethsemane Prickle · Glover Hipworth · Golpalott · Gregory the Smarmy · Gunhilda de Gorsemoor · Hector Dagworth-Granger · Hesper Starkey · J. Pippin · Laverne de Montmorency · Libatius Borage · Linfred of Stinchcombe · Mulpepper · Nicolas Flamel · Phineas Bourne · Quintia McQuoid · Regulus Moonshine · Rubens Winikus · Sacharissa Tugwood · Skower · Tilden Toots · Dr. Ubbly · Vindictus Viridian · Zygmunt Budge
Potions at Hogwarts
Cauldron cupboard · Dungeon Five · Potions basement · Potions Classroom · Potions Club · Potions Staircase · Potion Master's office · Potion Master's storeroom
Professors Bartholomew · Horace Slughorn · Severus Snape · Swoopstikes · Vindictus Veridian · Unnamed Professor (16th century) · Unnamed Professor (2021)
Textbooks Magical Drafts and Potions · One Thousand Magical Herbs and Fungi · Advanced Potion-Making · Moste Potente Potions · A Collection of Above Three Hundred Receipts in Cookery, Physick, and Surgery
Potions studied at Hogwarts
Ageing Potion · Amortentia · Antidotes · Antidote to Common Poisons · Antidote to garish pink blended poison · Antidote to Uncommon Poisons · Calming Draught · Confusing Concoction · Boil-Cure Potion · Doxycide · Draught of Living Death · Draught of Peace · Elixir to Induce Euphoria · Everlasting Elixirs · Felix Felicis · Fire Protection Potion · Forgetfulness Potion · Garish pink blended poison · Girding Potion · Hair-Raising Potion · Herbicide Potion · Hiccoughing Solution · Invigoration Draught · Love Potion Antidote · Pepperup Potion · Polyjuice Potion · Pompion Potion · Shrinking Solution · Skele-Gro · Sleeping Draught · Strengthening Solution · Swelling Solution · Undetectable Poisons · Volubilis Potion · Weedosoros · Wideye Potion · Wiggenweld Potion · Wit-Sharpening Potion