Potatoe Vodka production

[TWP]

This is a fairly detailed description of how to make alcohol from potatoes.  It could be called Vodka or Schnapps, but it is ethyl alcohol and if care is take, it is drinkable.  Even if you don't drink, think of it as trade goods.

http://homedistiller.org/fruit/wash-fruit/pot

Do note that having a source of both drinking and medicinal alcohol will be a valuable skill in a SHTF world

Also, if you distill, you will have a fuel suitable for both lamps and internal combustion engines.