Methyl alcohol (HEET, wood alcohol, etc). Invisible flame (in daylight), no soot. Auto supply and hardware stores. If on 100% by-weight basis, 48% of combustion energy of white gas.
Isopropyl (rubbing) alcohol is sold in 30%, 70%, and occassionally 90% concentrations (in water). The 30% doesn't ignite, and the 70% and 90% burn with a very sooty, almost invisible flame. Markets, drug stores. If on 100% by-weight basis, 64% of combustion energy of white gas.
Denatured alcohol (ethyl alcohol spiked to make it poisonous and thus untaxable). Hardware stores. If ethanol on a 100% by-weight basis (impossible unless distilled from a aromatic solvent azeotrope and protected from picking up moisture), 63% of combustion energy of white gas. Everclear (what you'd buy in a bar) is about 95% ethyl alcohol and 5% water and is fully taxable - thus expensive.
I stand by my blanket assertion that it takes twice as long to cook anything with alcohol. If simmering is important, you can get that with some of the white gas stoves like the MSR Dragonfly. Most people mostly boil water and save sophisticated cuisine for eating at "restaurants".
Alcohol stoves are much cheaper and lighter and the fuel is fairly obtainable, but it takes 2X to boil water and you need to carry 2X+ more fuel weight . It's my story and I'm sticking to it.