What does the term "brouillis" refer to in the distillation process?

The term "brouillis" specifically refers to the first distillate that comes off the still during the distillation process, particularly in the production of brandies and some types of spirits. This liquid is typically not the final product; instead, it is a lower-proof distillate that contains a mix of alcohol and flavor compounds. It is usually collected during the initial distillation phase and can be further distilled or refined in subsequent distillation runs to increase its purity and alcohol content.

"Brouillis" is significant in that it lays the foundation for the final spirit. The distiller can take this initial distillate and decide how to treat it, whether by redistilling it (to create a more refined spirit), blending it, or even deciding how it will be aged. Thus, it plays an essential role in the overall quality and characteristics of the eventual spirit produced.