Cooked Sun




About: The simplest solutions are my favourites, although the really intricate mechanical works that actually do good are my second favourites... :))

Two bowls, one in plastic or hardened glass for water, and one in stainless steel or cast iron for water. The water in the upper bowl works as a magnifying glass onto the water in the lower bowl, bringing it to a boil as soon as the sun shines.

With a stand of separate metal rods to keep the upper bowl positioned above the lower bowl, and the lower bowl having a flat bottom, no other parts are needed to cook a nice soup or boil some veggies, and by keeping the metal rods detachable, the whole set is easy to put away in a backpack or in the kitchen cupboard after use.

(Note: changed the name from Sun Chef to Cooked Sun after I looked around on the Internet and found another type of invention using this name. Sorry for any confusion ocurring there!)



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    6 Discussions

    This is a really smart design! Did you find this somewhere or did you come up with it yourself? I would love to read more about it.

    1 reply

    Hey thanks :)
    My inspiration for the construction and to make use of the solar/water prism combination for cooking/heating water, came from a YouTube video:,
    Although this Cooked Sun idea does feel so basic in a way so I can't imagine it not already being put into practice since years ago in many places, hence probably not making it my unique and first-ever idea :)
    But then again, I haven't seen it anywhere before myself, so maybe I got lucky with this one?



    2 years ago

    Thanks for the comments, guys :)

    We've had a great amount of sunshine here these last few days, and I simply took one glass bowl, app. 20 cm across, with a round bottom, and poured some water in it. I put it on a temporary stand of brick stones, allowing the sun to shine down through and below the bowl and the water.

    It turned out that a focal point was created, and when I placed a small piece of dry wood where the light was brightest, it took about 30 seconds before it started to smoke.

    It simply works as a magnifyer glass, so boiling water or lighting fires is a piece of cake with just a glass bowl and some water (and some sunshine!) :)

    brad ley

    2 years ago

    Just curious if anyone has attempted this yet?