Which of the following is not a step in vodka production?

Vodka production typically involves several key steps that transform base ingredients into the final spirit. These steps include fermentation, where the sugars from the chosen base (such as grains, potatoes, or even fruits) are converted into alcohol by yeast. Following fermentation, the next crucial step is distillation, which involves heating the fermented liquid to separate alcohol from water and other components based on their different boiling points. After distillation, filtration is employed to further purify the vodka, removing impurities and achieving a desired smoothness and clarity.

Infusion, while a technique used to add flavors to spirits, is not a standard step in traditional vodka production. In fact, infusing vodka typically occurs after the distillation and filtration processes, where flavors from herbs, fruits, or spices are extracted into the vodka to create flavored varieties. Therefore, among the listed choices, infusion does not belong to the fundamental steps in the basic production of vodka. This distinction is essential in understanding the core processes involved in crafting vodka.