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There is a drink chiller that chills drinks in about a minute. You could use the same idea for other things.
This was a b plot on the Bam Margera movie haggard.
Falcone wants his royalties
In beer brewing there's a point where you want to cool your beer down as quickly as possible.
A chiller is dropped into the just cooked wort. (wort is the beer before fermentation).
It goes from steaming hot to room temperature very quickly.
It's just a spiral pipe that you run cold water through.
Sounds like you need something like that for a potato.
I present the Macro Wave!
Removing heat energy is what your freezer does, by transferring it outside of the freezer box.
You can’t just remove heat by adding electromagnetic energy. Absorbing energy from the electromagnetic radiation makes heat.
Edit: whelp, TIL
You can’t just remove heat by adding electromagnetic energy.
Except that you can.
The magnetocaloric effect can do this. Instead of the target absorbing energy, the magnet does. The magnet heats up and the target cools.
Fridge, well. But now I'm wondering if that would be possible with electromagnetic radiation somehow. Would it be possible to direct infrared waves away from a closed chamber, making the inside cooler? Like a semipermeable membrane in shoes with water vapor?
I don’t know if it’s a stupid question or not but I have been wondering this myself for years. :)