This page uses data from the Miitopia Param Info spreadsheet, compiled by PibPasquale, Kobazco, and UglyFrenchFry.
Elven Potion is a magical-looking glass bottle with gold trim and a cork filled with cyan liquid. It has a silver spirit circling the bottle. It is the Signature Grub of Realm of the Fey.
(Has sparkles, only V. Rare foods have this.)