I have found the Book of Remembrances in the royal library… a wellspring of knowledge directly from the mouths of great rulers and scholars of the past… my only wish is that I might discover a way to add my own knowledge to this work.
T’Arkia, Imperial High Mage
Another real world thing. White tea. Can only be picked two days a year, the two days before the flowers blossom. Could be a similiar plant that...is the deadliest poison known, cure known diseases or psychosis, or a potent herb that just tastes awesome.