Zen.net says a high proof grain alcohol like Everclear is acceptable and clean burning, if a bit pricey, but might make a nice multipurpose option, burn it, use it for an anti-septic, drink it, etc etc.
Re,
C. Rowe
Everclear 190 proof is hands down the best fuel for alcohol stoves. The only issue is the price, around $15 a bottle (750ml). And, unfortunately they don't sell 190 proof in some states, CA included. (but the 151 proof works well too) Its also perfect if you store your stove inside a cooking pot, as it leaves no toxic residue like all the denatured/methanol stuff.