I use denatured alcohol.

All kinds of cautions.  First alcohol, you can't see the flame which is a real hazard.  Second, unless it is ethyl alcohol, like denatured, the noxious fumes are over powering in closed in environments like a small pack tent or boat cabin.  Dentured, especially boat stove fuels, are pretty safe and not bad at all in those environments.  

Though I don't use my little pack alcohol stoves a lot, I use the heck out of my alcohol boat stove.  These things work great really.  Though they are simple as hell in design and structure, due to the alcohol, they do require a bit more thinking than other types of stoves.  

Heck, in a pinch, I used Vodka once.   Hey, it was cold out.

tj

Unless your particular stove is rated to burn alky, then assume it is not so rated.



For example, my multi-fuel, NATO Optimus 199 (no longer offered) requires the tank to be completely drained, and an Alky jet (nozzle) to be installed prior to Alky use. YMMV.



The folks saying that they used potable alky (booze) for fuel almost certainly regret doing so.  Cut up the cheap furniture and such before burning perfectly good licquor, I say.  YMMV.

Yes, anything with  a high water content content like booze not only is not efficient but comes with its own set of problems.  The water just doesn't burn and when you throw in the fact often its hard to tell whether an alcohol flame is out or not, it can be quite interesting.