MelatoninProbably a stupid question, but will we ever have something like a microwave to make things cold? Is there a reason this can't exist?
There is a drink chiller that chills drinks in about a minute. You could use the same idea for other things.
The Fastest Way To Make a Drink Cold
CorkyskogThe Chill-O-Matic is smaller, cheaper and probably easier to clean as it doesn’t seem to have tubing.
The design of that machine in your link is a lot of overkill for something simple.