the only people who will care about such a device are those who actually cook food.
I haven't carried food beyond some angel hair noodles (5 min boil) that needed the burner lit after reaching initial boil. Just about everything I eat out there gets dumped into boiling water and then I let it sit for 7-10 minutes wrapped in a fleece jacket. Done. And it doesn't always have to be freeze dried: minute rice meals, many Knorr entrees (kicked up with dried meat or real bacon bits), couscous, vegetarian taco mix, soups, etc - just shop your grocery store for the things that are done quickly.
I can't imagine doing a 6 hour bean stew up there, even if the pressure cooker can cut that time down to 1 hour - that is a lot of fuel, unless you got a real big fire going.
