Half a croissant, on a plate, with a sign in front of it saying '50c'
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A riddle wrapped in a mystery inside a rich, flaky crust

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freshwater bowl

This bowl sits in on the counter or in the sink and always has clean fresh water
  [vote for,

This is a small "eco-system" inside the kitchen.

Water from the bowl is removed by a pump and passed through several natural filters (like in an aquaponic system).

Once in a while, the water is boiled and then cooled before being returned to the bowl.

You can put dirty dishes with soap in the bowl and wash the dishes by shaking them vigorously. After a while, the water is removed and filtered, returned to the bowl sparkling clean with no soap.

For arid places where water is sparse but energy is abundant.

pashute, Jul 27 2017

ISS Water Recycling https://science.nas...sa/2000/ast02nov_1/
[FlyingToaster, Jul 27 2017]

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       'Twould be interesting in the home, but rather deep-space fried <link> as an idea. Wonder what the energy requirements would be.
FlyingToaster, Jul 27 2017

       // places where water is sparse but energy is abundant. //   

       The Sunward side of Mercury ?
8th of 7, Jul 27 2017

       Yes well --- this is just not funny
madness, Aug 01 2017


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