This page uses data from the Miitopia Param Info spreadsheet, compiled by PibPasquale, Kobazco, and UglyFrenchFry.
Geothermal Pizza is a delicious-looking pizza that's cut into a traditional triangle slice. It has toppings of meat, most likely pepperoni, and melted cheese and sliced black olives. It appears to have a nice, crunchy crust, and is also extremely melty and lopsided, as if it's being held improperly. It is the Gourmet Grub in Karkaton, given to the player by the Roaming Gourmet.
(Has sparkles, only V. Rare foods have this.)