Drink deep from the Moon-Cup, let its powers quench your thirst, or even save your marriage.
No nose, hardly any body, a terrible wine, really.
Long ago, longer still than even the golden age of Hamset, so long it is out of the memory of man, though not of the elves for they remember their history to the first. Many secrets areheld by the elves. As this, a glass vial containing the tears of Laitha, the fairest, kindest and most beautiful living being to grace the world of Hamset.
You find a patch of edible funghi. They taste well and all, no ill effects. UNLESS you consume some beverage, even 3 (three) days after eating it. Then you become really sick with pains, vomiting, all the fancy stuff. As a gift or good meal, it could be a cruel joke or to make sure the heroes spend their time focused on the mission. And the fine soup you had in the inn yesterday could have some in.
(Inspired through a real-world fungus. Was really used to cure alcoholism.)