Ethanol is not the only possible product of distillation. If you have the right equipment and know what you’re doing, you could distill octane out of gasoline, but it would not be very practical to do at home.
I suspect that Olog-hai knows this and is being facetious, especially given that our new friend littlebird seems to be somewhat of a little bird brain.
We used 115/145 “purple gas” in the T-28 trainers (1977-78) at Pensacola. I used to love walking from the BOQ to the flight line early morning and the flights started taking off. It was like a scene right out of a WWII movie with the big radial engines in the T-28s rumbling and a long orange/blue flame coming out of the exhaust stacks.
https://en.wikipedia.org/wiki/Avgas
True 'dat. Methanol is also a possibility. Distilling gasoline (very flammable liquid) is very very dangerous. Don't try this at home, kids.