I actually like the bourbon barrel idea but would like to modify it a bit and put 3 barrels end to end. Of course that would be really expensive right from the start unless a really hot deal was to fall out of the sky. I would think 3 different steel compartments under each barrel for compartmental heat source supply would provide a lot of control. I have someone who can cut and weld the bases. As I type and think this is really sounding intriguing. And worth further consideration.