Hitch hiking on Seed Tick's idea of sneaking up on the "cooked enough point", there is an old concept that may work at home as well as it does in camp.
For each of my two camp pots I made an insulated cover out of an old ensolite pad, and (what else?) duct tape. This takes a bit of creative cutting, but is relatively easy and low tech.
For a pot that is cylindrical, I cut a circle the diameter of the pot + adding the thickness of the material. This gives an over sized circle for the bottom. Put a layer of aluminum foil on the bottom so the pot bottom rests directly on it instead of the padding.
For the sides, measure the total circumference and cut a strip that long (plus an inch or so) and that high. Tape this to the bottom piece. You'll have to cut slits or notches for handles.
Make a cover for the top, and cut slits or notches for handles. A simple piece of duct tape will connect top & bottom as a hinge.
In use, bring the pot to a boil, turn off the stove, and then set the pot into the insulated cover to continue cooking. It will slowly cool, but cooking is going on all the time.
You may have to replace the pot on the stove and bring it back to a boil. But, most foods cook easily this way, though they take longer. If in doubt - reboil. Sit back, relax, sip an adult beverage, look at the scenery. Save fuel.
For a campfire, you can burn logs made of compressed peanuts. For those spectacular colors - add tofu to the log mix.
