Flux gel
From Jenny Everywhere Wiki
To check his identity when he appeared as a ghost in her house on Halloween 2019, Juliet-178 made Pythagoras-858 recite how the two of them had solved the Case of the Blueberry Squid: to wit, the Problem-Solvers “simply adjusted the temperature of the squid's flux gels, and it transmorphed itself right back into a Strawberry Squid”. (PROSE: The Ghosts and the Machine)
