Comment by blululu

"Distillation doesn’t create alcohols, it only concentrates them." This doesn't sound quite right. Distillation concentrates alcohols as a function of their boiling points and the temperature. Heavier alcohols have higher boiling points so methanol will be distilled faster than ethanol. This means that it is can become more concentrated in the distillate. The idea that the relative proportion of compounds can change is the whole idea of distillation in the first place. To be fair, people have been distilling alcohols just fine for a few hundred years now so clearly this can be done safely with primitive technology. But is definitely possible to increase the methanol concentration relative to ethanol through distillation and it should definitely come off the still first if you just apply heat.