This is awesome... thanks! I'm impressed with that boil of such a volume of liquid.
I've been debating buying one of these instead of installing an element and your video is steering me closer to that... the only thing holding me back is not being able to control it with a PID, so I'll still need a RIMS tube for holding mash temps.
Edit: hmmmm... I wonder if it would be possible to rig something to perch my keg (boil kettle) over this and if it would still boil as well (since the bottom curves away from the magnetic field). Maybe not, since I think I read somewhere you can get special induction cookers to use with woks.