Originally Posted by
lclang
You can buy potato vodka. It is the potatoes that provide the "starch". If you use it straight you don't need to dilute it, according to what I've read.
The starch is turned into alcohol by the fermentation process. It doesn't matter which "starch" you start out with, corn, wheat, potato, rye, rice, etc the act of fermentation turns the starch to alcohol.