I have been on trips that used a turkey fryer burner for heating water. I am a Partner 4 burner fan mine has a split-able hinge for more space, bigger pots.
How much heat goes into the water vs lost in space.
Cook dinner- put the big dishwater on the Partner on low- Sit down and a nice Dinner- Hot water ready.Coffee made and stored in old colman1gl.insulted jug before breakfast
 
 Any day on the River is better than----