Check around for one of the classic Coleman 425C stoves. I got one for $15 used and run it on straight 87 octane no alcohol gasoline (as I do with their liquid fuel lanterns i’ve gotten). I just cooked for 20 on the one I have.
I’ll do that. My husband said we have one in the shed so I’ll look for it. Hopefully it’s not full of wasps, dirt daubers, and mice. :-)