Microwave ovens on tour.
-free from fuel (and refueling) requirements and restrictions
-fun to use
At first, I didn't like them at all. My early experiences were rather skewed toward the bizarre (including sparking chestnuts, unusual smoke, bright internal electric arcs, and explosions). However, since then -- and as I have used them more, and learned how to use them more appropriately -- I find that I really like them more and more.
Also, I got over some microwave scare propaganda and rumours I had picked up along the way.
[Plus, I was overdosedly microwaved by a rogue chiropractor, and after that I got used to being around a few minor exposures without a lot of concern....]
One idea is to find a microwave oven that is battery operable.
A compact, lightweight one.
Another idea is to use a small, lightweight inverter.
Batteries could be recharged using electrical outlets, whenever available (the oven could also be used directly from these outlets, when appropriate).
Solar chargers could also be used. And hub generators are an option.
The microwave ovens I've seen do not use a lot of electricity. They cook many sorts of foods in a very short time -- unusually short -- the shortest time by far of the various available cooking techniques.
Another idea is to hack an old microwave -- one that is sitting around, or one from a yard sale.
The outer hull could be removed, and the microwave generating unit could be isolated.
[...with appropriate precautions] [a custom, lightweight-compact, foldable or collapsible hood could be devised]
I wonder how compact one could make it?