What is freeze drying?

#172

What is freeze-drying? How can something be both frozen and dried? How does it differ from just freezing, or just drying? And is it just for astronauts? Let's get into it!

References from this Episode

1. https://pubs.acs.org/doi/10.1021/acsami.5b05841
2. https://cen.acs.org/articles/86/i39/Instant-Coffee.html
3. https://www.rsc.org/publishing/journals/prospect/ontology.asp?id=CMO:0001553&MSID=b501961c
4. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7603155/#:~:text=Freeze%2Ddrying%2C%20also%20known%20as,high%20quality%20food%20and%20pharmaceuticals.

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