// Definition
A technique for cleaning cannabis extracts by immersing them in liquid nitrogen until they shatter, then allowing them to warm up, which can help purify and clean up concentrate quality.
// From the Episode
Discussed in the context of cleaning up extracts that may have impurities. The extreme cold (-196C) makes the extract brittle enough to shatter, potentially allowing contaminants to separate. After shattering, the extract is set aside to warm up gradually. This repeated freeze-shatter process progressively cleans the extract.