As an expert sommelier and brewer, I can confidently say that whiskey does not last longer in the freezer. In fact, storing whiskey in the freezer can actually dull the flavors and diminish the overall drinking experience. Let me explain why.
When you chill whiskey, the cold temperature can numb your taste buds, making it difficult to fully appreciate the complex flavors and aromas that make whiskey so enjoyable. Whiskey is meant to be savored and enjoyed at room temperature, where its nuances can fully shine.
The freezing point of whiskey is significantly lower than the freezing point of water, so it is unlikely that your whiskey will freeze solid in a typical household freezer. However, even if it doesn't freeze, the cold temperature can still have negative effects on the taste.
When whiskey is chilled, the volatile compounds that contribute to its unique flavor profile become less noticeable. These compounds, such as esters and aldehydes, are responsible for the fruity, spicy, and oaky notes that we associate with different types of whiskey. By chilling the whiskey, these flavors are muted, resulting in a less vibrant and enjoyable drinking experience.
Additionally, freezing whiskey can also cause changes in its texture. The alcohol content of whiskey can cause it to thicken slightly when exposed to cold temperatures. This can affect the mouthfeel and overall enjoyment of the drink, as the texture may become slightly syrupy or viscous.
Furthermore, temperature fluctuations can also have a negative impact on the long-term quality of whiskey. When whiskey is repeatedly exposed to freezing and thawing cycles, it can lead to expansion and contraction of the liquid inside the bottle. This can potentially cause the cork or seal to become compromised, leading to oxidation and degradation of the whiskey over time.
While storing whiskey in the freezer won't permanently harm it, it will dull the flavors and diminish the overall drinking experience. Whiskey is best enjoyed at room temperature, where its complex flavors and aromas can be fully appreciated. So, instead of reaching for the freezer, I would recommend storing your whiskey in a cool, dark place, away from direct sunlight and extreme temperatures, to ensure its longevity and optimal taste.