Most Vodka Isn't Actually Made From Potatoes - Chowhound

The vodka-making process begins by combining a base ingredient — such as wheat, corn, or potatoes — with water and yeast. The yeast reacts with the sugars and starches present in the base ingredient, fermenting the mixture until it forms ethanol (alcohol). Once the mixture is fully fermented, it's ready to be distilled. This is the most crucial part of vodka production and the step that truly sets it apart from…