Boiling up a single roobois teabag in a lot of water, for the making of iced tea, it strikes me that I'm using quite a lot of stovetop heat inside an air-conditioned house. There's a lot of waste heat, and then a lot more power wastage to get that waste heat out of the house.
Another observation from today, the seat in the car is bloody hot.
Combined observations that give me an idea; I want a pot with a black cast iron exterior and stainless steel interior, and a glass shell that goes over it, which would be good for making anything that requires a medium heat for a long time, like casseroles or vats of iced tea, just by leaving them outside in the climate of Florida. (Or, in the future, the climate of a tropical island.)
There are already solar cooker plans, but those all involve reflectors that would make it more awkward to use. Also, a glass shell over the top and perhaps a rubber ring that it rests on would keep ants and mosquitos from getting at the container (though I suppose boiling temperature and a lid would keep them off pretty well too).
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