caption: Polyjuice Potion I wanted to illustrate all of the known potion ingredients in Harry Potter in the style and format of the old Little Golden Biology textbooks. That's a massive undertaking, there are hundreds of them (check out the harry potter wiki. Harry Potter Fiesta, Theme Harry Potter, Harry Potter Spells, Harry Potter Room, Harry Potter Tumblr, <PERSON> Potion Ingredients, Harry Potter Plants, Potions Recipes, Potter School