What is the main difference between double and triple distillation?

The main difference between double and triple distillation lies in the level of purity achieved through the distillation process. In triple distillation, the wash (fermented liquid) undergoes an additional distillation step compared to double distillation. This extra step provides more opportunities for the distillation process to separate impurities and unwanted compounds from the alcohol. As a result, the spirit produced through triple distillation tends to have a higher purity and a cleaner flavor profile, making it more desirable for certain types of spirits, such as whiskey and certain types of vodka.

It's important to recognize that the process of distillation is aimed at concentrating alcohol and enhancing the characteristics of the spirit. While double distillation already increases the alcohol content and refines the flavor, triple distillation takes this refinement a step further, achieving a more delicate and refined spirit.