I took an engineer's tour of the Coors brewery in Golden, CO. The plant engineer leading the tour showed us a couple of rail tanker cars full of ethanol, a byproduct of the beer process. He told us they add "a few gallons" of gasoline to each car to "denature" (poison) it before shipping. It's much cheaper that way, he said, because of taxes on drinking alcohol.

All this circular discussion does for me is make me pleased I found a way to free myself from cooking on bike tours and backpacking trips. But I'm sure glad I learned how to make and use alcohol stoves before I quit cooking. They're a thing of beauty in design and utility. And I still have my old Whisperlite (neither of which is true).