So, anyway, my trip report on this is that it was pretty rough. But I think I figured out my mistakes and will try again.
Of course, it costs about $1.00 a gallon, so, no worries.
I was also super paranoid about the container. I used a plastic bottle and the thing was like the Hindenburg and, clearly, very angry. So I probably didn't let it ferment correctly. The solution: I buy a fermenting bucket and use that. Or a carboy with a gas valve.