Copper saddles are a crucial component in the distillation process, particularly when it comes to removing sulphur odours. As a sommelier and brewer, I have firsthand experience with the importance of copper saddles in producing high-quality spirits and beer.
During distillation, the wash undergoes a complex series of chemical reactions to separate the alcohol from other compounds. However, these reactions can also generate undesirable sulphur compounds, which contribute to unpleasant odours and flavors in the final product. This is particularly common in high alcohol washes, usually those with an alcohol by volume (ABV) of over 16%.
Copper, being a highly reactive metal, plays a vital role in eliminating these sulphur compounds. When the wash comes into contact with copper saddles in the still, a chemical reaction occurs. The copper catalyzes the conversion of sulphur compounds into less odorous forms, effectively removing the sulphur odours.
I remember a specific instance in my brewing career where I encountered the need for copper saddles. I was brewing a strong Belgian-style ale with a high ABV, and during the fermentation process, there was a noticeable presence of sulphur-like odours. This was concerning, as those odours would undoubtedly carry through to the final beer if left unchecked.
To address this issue, I decided to incorporate a copper saddles column into my distillation setup. By allowing the wash to interact with the copper surface, I was able to significantly reduce the sulphur odours during the distillation process. The resulting beer had a cleaner and more pleasant aroma, enhancing the overall drinking experience.
It's worth noting that copper saddles are not the only option for removing sulphur odours. Copper mesh, copper plates, or even copper foil can also be used effectively. The key is to have a sufficient surface area of copper exposed to the wash for the catalytic reaction to take place.
In terms of practical application, copper saddles are typically placed in the column or rectification section of the still. They are often stacked in a packed bed arrangement to maximize the surface area available for interaction with the wash. This ensures optimal contact and catalytic activity.
To summarize, copper saddles are essential for their catalytic properties in removing sulphur odours during distillation. Their use is particularly crucial in high alcohol washes where sulphur compounds are more likely to be present. By incorporating copper saddles into the distillation setup, brewers and distillers can enhance the quality and aroma of their spirits or beer.