You can simplify this a bit from the construction in the article. Use the bottom sections of two cans, and you only need the pinholes in the rim and a larger hole in the middle of the top half to fill/drain.

zhivota · 3h ago

I used one of these exclusively to cook on an 8 day bike packing trip about 15 years ago. You can't beat it for weight and size efficiency IMO.

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