What is the approximate ABV of the first batch run through a pot still known as?

The first batch run through a pot still is referred to as Brouillis, which typically has an approximate alcohol by volume (ABV) of around 25%. This term originates from the French distillation practice, and Brouillis represents the initial distillate collected during the distillation process. The composition of Brouillis primarily consists of a mix of alcohol, water, and various congeners, giving it its unique characteristics before further distillation and refinement.

Understanding the distillation process is vital, as it involves multiple runs to separate various components of the wash. Each consecutive run—such as the low spirits—which refers to the distillate collected after the initial run and typically has a higher ABV—serves a specific purpose in obtaining a cleaner, more refined spirit.

In pot still distillation, the first run is not yet separated into heads and tails, which are components referred to in later stages of the distillation. The heads contain higher volatility compounds, while the tails contain heavier compounds and generally have lower ABVs. Thus, Brouillis is uniquely situated in the process, defining it as a foundational stage of distillation with its specific ABV characteristic.