The Origin of Freeze Drying

This is actually the original form of freeze drying. it has existed for over 600 years in south america and they still use it today to preserve their potatoes!

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[TheoutdooradventureNet]

I was in the middle of a meal involving said potatoes when I was informed that a bunch of women had been walking all over them... I finished the meal!

[TheoutdooradventureNet]

Thanks again! They are also the group that came up with Jerky... Although I don't fancy the taste of either chuño or charque.

[TheoutdooradventureNet]

yes. It's Mountain house's second best seller... right after bolivian potatoes.

[kan-zee]

Excellent..Amazing what indigenous tribes have contributed to society. Cheers ;-))

[DaveCMechEng]

This sounds like it is more dehydration than it is freeze drying. You even describe the process as dehydration during the video. Dehydration is water turning into a gas (i.e. evaporation). Freeze drying is ice turning into a gas (i.e. sublimation). I guess if they freeze overnight and they are at a very high altitude so a very low pressure condition exists then freeze drying may be plausible.

[TheoutdooradventureNet]

Dave, Thanks for your comment. In 38 seconds one can't explain the science, but I am aware of the differences between freeze drying and dehydration. If you looking into the history of freeze drying you will see that they cite this as the first known use of it.

[derman]

There's freeze dried mac n cheese?