Left in the mailbox (or whatever passes for a porch) of the boat house early in the morning is a stack of papers bound in leather and tied with a string. Inside, there are recipes for potions named Essence of Dittany, Draught of Living Death, Polyjuice Potion, Amortentia, Draught of Peace, Felix Felicis, Pepperup Potion, Murtlap Essence.

The instructions are detailed, but clearly written from memory, and quoting ingredients not found in Thedas. Explanations for what each potion does are included at under the title of each page.

The first page includes a dedication:

To my knowledge, none of these are appropriate for smoking to get high. Sorry!
Hermione Granger