Pure Alcohol is one thing. Popping a cloth in any ol bottle of booze one has left over is another. But, maybe there was a lush in the tower and they had stacks of 151. We could look it up, but I do not think stuff below 100proof burns. yea, I am not trying to reinvent the wheel. I am just trying to put the classic homemade off the shelf and have it burn and ignite other objects.