It's apparently quite expensive[0]. Once you get maximum purity that distillation allows, it's not worth the cost to process further just for recreational use.

It's apparently quite expensive[0]. Once you get maximum purity that distillation allows, it's not worth the cost to process further just for recreational use. [0] https://www.quora.com/Where-can-you-buy-ethanol https://www.quora.com/Where-can-you-buy-ethanol