"iSmoke. Don't breathe this!"
I LOVE his videos. At their website, they separate the demos into "safe" (try it at home) and "unsafe". There are over a dozen pages of "unsafe" and just a few of the "safe" ones. And, he says, "Don't breathe this!" a LOT. :biggrin1:
And that grin that he always gives partway through the blend... really funny.
I'm still not sure what turned the mixture coal black with such speed, though. My guess is that it was the battery finally rupturing.