The Draught of Peace was a potion which settled or eased anxiety and agitation in the drunker. Students were taught this potion in Fifth year at Hogwarts School, and was often administered to students around exam season.

It was said to be quite a complex brew, taking 90 minutes to create, and requiring precise amounts of each ingredient. A successful brew was turquoise with a silvery vapour. Unsuccessful or overdone brews could put the drinker into an irreversible sleep.

To brew this potion, eighteen steps must be followed: first, add powdered moonstone until the potion turns green, then stir until blue. More moonstone should be added, until it turns purple, then it should be simmered until pink (usually 7 minutes). Then, two drops of syrup of hellebore until the potion is turquoise, then simmered until purple. Then, the stewed mandrake should be shaken and added until the potion is red. It should then be stirred until orange, then more mandrake added until yellow, then stirred again until green. More mandrake should be added until turquoise again. The potion should then be simmered until purple, then powdered unicorn horn is added until pink again. Then, the potion should be stirred until red, and simmered until purple. More powdered moonstone should be added until pink, then simmered until orange. Finally, 7 drops of powdered porcupine quills should be added until the potion is white.