Originally Posted by Hermit
My large burner won't do a five gallon batch and he says this does 30? Skeptical.
My single large burner on my stove will bring 6.5 gallons to a boil. I'm just saying that to point out that not all stoves are equal.
That being said, I agree that the way he has it set up doesn't look like it would work. You would lose so much heat out and away from the kettle, much more than you would put into it.
At least when it's on a stove, the stove top acts as a reflector/insulator.