Liquid nitrogen and components.

[Pano]

Yes 2. Time and patience are a big part of the process.

 

[marce]

https://en.wikipedia.org/wiki/Cryogenics

 

[chrisb]

and further, as to the actual type of processing we should be thinking about here:
https://en.wikipedia.org/wiki/Cryogenic_processor

There still of course may be certain combinations of materials that won't lend themselves to the full deep freeze, no matter how carefully temperatures are ramped down and back up.