101Leafy researched the game with the Hilltop Works fan translation patch, English translation by Cargodin
Green Ice緑色の氷
Green Ice is item 81 of the game's item table, in the Items group. The script never names it.
A frozen, green substance
緑色の水のようなものが凍っている。
It never shows up on its own in a talk with a picture, so it has none here.
Item table: Life Orb Green Ice Full Bottle
English translations by Cargodin for Hilltop Works Fan Translation Patch: https://www.patreon.com/hilltopworks/posts/kowloons-gate-160555525?collection=18503