Can you use spirits in a Zippo?
I would guess you can, a good way to check (Insert Legal Disclaimer Here) is to soak some cotton wool or a ball of toilet paper in the fuel you want to check and either spark it or see how easy it is to set it on fire. The alcohol you use, ideally needs to be above 40 percent volume (Pure Alcohol, Vodka, Schnapps, Gin, Whiskey, Rum etc.