Just found this thread. I have been toying with the idea of hard wiring one of these bad boys into the Crossfire:
http://www.12-24voltovens.com.au/travel-buddy-12-volt-marine-oven/ thoughts anyone?
I have one of those butane burner stoves, yet to try it out.
I had forgotten about the old frankfurter in thermos trick, Thanks Kiwi Dan, I will be adding that one to my sea faring munchies list.