[mordae]

Are adding it or just distill both because it's cheaper?

[SoftTalker]

Yeast microbes make ethanol, not (much) methanol.

[tastyfreeze]

Adding. That majority of things we ferment and distill will not produce anywhere close to 5-10% methanol.

[cucumber3732842]

To make it poisonous enough that the tax men leave you alone.

So cheaper in a circuitous way.