Eldercap

Eldercap is a type of fungus that grows in the Feywild. It is difficult to cultivate, but some people, such as the Hag Skabatha Nightshade, find it worthwhile to do so anyway. It is characterized by a hairy, gray cap with wrinkles and bumps. When eaten, it causes the one who eats it to look like an elderly version of themselves for an hour or so.