“Hurtubise is protective of ingredients for his concoction, but during a segment aired on Discovery Channel‘s daily news show Daily Planet, he revealed one secret to be Diet Coke. Images from electron microscopes show that the particles in the paste are very porous, which makes it a good insulator. Other tests showed the paste contained lithium and bromine, bound into compounds in the paste. Microscopically, it looks like a diatom absorbent, such as kitty-litter or any common industrial oil absorbent.”
seems to have made some thing called Firepaste that does the same job.