In all this discussion of biofuels, I haven't heard
anyone mention that the current primary attractant to
biodiesel for the appropriate consumer is that most of
the feed stock (used fryer oil) is next to free.  As I
see it, biodiesel's attraction is that it converts
somebody else's trash/disposal problem into cheap
energy, not that it might effectively supplant our
current gasoline/diesel consumption.

.....

It would be interesting to calculate how much land
area would be required to produce half of the US's
fuel consumption in the form of biodiesel.

.....

Using vacuum distillation, could you simultaneously
brew/distill your mash to allow the yeast therein to
consume all of the mash's sugar without achieving
toxic levels of alcohol in the mash?  It would be a
shitty way to make beer, but maybe an efficient way to
brew ethanol.


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