A Bennett still, also known as an alembic still, is a type of pot still commonly used for the distillation of gin. Unlike other types of stills, such as column stills or reflux stills, the Bennett still follows a more traditional and straightforward method of distillation known as the “steep and boil” method.
The Bennett still consists of a large pot, or “boiler,” which is heated using a steam jacket surrounding the pot. This steam jacket provides even and controlled heat distribution, allowing for the gentle and gradual heating of the botanicals and alcohol mixture inside.
One of the defining characteristics of the Bennett still is its shape. It typically has a large, round pot with a wide opening at the top and a long, narrow neck leading to the condenser. This shape helps to concentrate the flavors and aromas during the distillation process, resulting in a more flavorful and aromatic gin.
The steep and boil method used in the Bennett still involves steeping the botanicals in the alcohol for a period of time before the actual distillation takes place. This allows the flavors and aromas of the botanicals to infuse into the alcohol, creating a rich and complex base for the gin.
Once the steeping period is complete, the mixture is heated in the pot, causing the alcohol to vaporize. The vapor then rises up the neck of the still and enters the condenser, where it is cooled and returned to its liquid state. This process of vaporization and condensation helps to separate the alcohol from the impurities and unwanted compounds, resulting in a purer and higher-quality gin.
The use of a steam jacket in the Bennett still allows for precise temperature control during the distillation process. This is important because different botanicals and flavors require different temperature ranges to be fully extracted. By adjusting the steam pressure, the distiller can control the rate of heating and the resulting flavors in the final gin.
In my personal experience as a brewer and sommelier, I have had the opportunity to work with different types of stills, including the Bennett still. I have found that the Bennett still offers a more traditional and hands-on approach to distillation, allowing for greater control over the final product.
The use of a steam jacket in the Bennett still also helps to minimize the risk of scorching or burning the botanicals, which can negatively impact the flavor of the gin. The even heat distribution provided by the steam jacket ensures that the botanicals are heated gently and evenly, allowing for a more balanced extraction of flavors.
The Bennett still is a tried and true method of gin distillation. While it may not have the advanced technological features of more modern stills, it remains a popular choice among distillers who appreciate the traditional and time-honored approach to crafting high-quality gin.