This page uses data from the Miitopia Param Info spreadsheet, compiled by PibPasquale, Kobazco, and UglyFrenchFry.
Spider Roll is one piece of spider meat rolled with cucumber, tamagoyaki (grilled egg) and sticky rice and another spider-leg sushi, wrapped in seaweed, sticky rice, and lettuce. It is placed on a purple tray (which is the same colour as the Demon Spider).