Thursday, 01 November 2007
I've got some space food for sale on eBay if anyone's struggling for gift ideas this Christmas. They're all freeze dried and have a novelty factor about them!
Here's how they freeze dry ice cream:
Freeze-drying, or lysophilisation, removes water from the ice cream by lowering the air pressure to a point where ice shifts from a solid to a gas. The ice cream is placed in a vacuum chamber and frozen until the water crystallises. The air pressure is lowered, creating a vacuum, forcing air out of the chamber; next heat is applied, vaporising the ice; finally a freezing coil traps the vaporized water. This process continues for hours, resulting in a perfect freeze-dried ice cream slice.
Just to reassure you, I have tried all of these myself and I was very suprised. I didn't expect them to taste anything like they should do but they really do. Plus, it's interesting seeing ice cream freeze dried - it's got the same sort of consistency as the crunchy part of a Crunchie bar!
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David, if you think astronaut food is tasty you should try Giant Toasted Leafcutter Ants!
Written on Thursday 01 November 2007 at 22:47:34 GMT (Permalink)
@Laura - I think the skip voucher has to be the gift that keeps on giving!
Written on Friday 02 November 2007 at 09:18:22 GMT (Permalink)
Thank you to all previous commenters.
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