MagicPotion
Draught of Living Death
A powerful sleeping potion made with asphodel and wormwood, first described by Snape in Harry's first Potions lesson. Harry later brews it in Slughorn's class using the Half-Blood Prince's notes.
In the books
Harry Potter and the Philosopher's StoneChapter: 8
Snape mentions the potion while questioning Harry in his first Potions lesson.