Katarian pudding was a frothy-textured dessert dish that included a catalytic agent designed to make the dessert evaporate in the mouth of the individual eating it.
In 2375, Ambassador Neelix offered Kadi representative Tomin a sample of Katarian pudding, which, upon tasting, he savored. (VOY: "Someone to Watch Over Me")
Though pronounced as "Ktarian", the script uses the spelling "Katarian", which was either a variation in spelling or an altogether misspelling.