Ktarian pudding

From Memory Alpha, the free Star Trek reference.

Ktarian pudding is a frothy-textured dessert dish that originates from the planet Ktaria VII. The recipe for Ktarian pudding includes a catalytic agent designed make the dessert evaporate in the mouth of the individual eating it.

In 2375, Ambassador Neelix offered Kadi representative Tomin a sample of Ktarian pudding. (VOY: "Someone to Watch Over Me")