This page uses data from the Miitopia Param Info spreadsheet, compiled by PibPasquale, Kobazco, and UglyFrenchFry.
Bitingly Bitter Tea is served in a transparent cup and saucer. The tea itself is reddish-pink with three purple bulbs and a Mars Mii Trap leaf-tongue in it. Notice the tea is the same color as the Mars Mii Trap head.