The Stove House sells cleaning products to remove finger prints and rust marks from stoves, soot from the glass but not sure if it works on tongue slim!! Or 'tonguer prints' as my son has just called them! Funny-when I told him this fact... he said if marks made from fingers are called 'finger prints' does it mean marks made from your tongue are called 'tonguer prints' ? Love this.)
We would recommend you not lick your stove.