This page uses data from the Miitopia Param Info spreadsheet, compiled by PibPasquale, Kobazco, and UglyFrenchFry.
Fluffy Marshmallows ★★ are three pale, turquoise-colored marshmallows that are extremely fluffy. The marshmallow on the far right appears to be slightly darker than the other two.
(Has sparkles, only V. Rare foods have this.)