As an expert sommelier and brewer, I can confidently tell you that Dewar's Scotch does not technically go bad. However, like any other whiskey, it does start to lose its flavor and characteristics over time, especially after the bottle has been opened.
When it comes to unopened bottles of Dewar's Scotch, they can last indefinitely if stored in the proper conditions. It is essential to keep the bottle away from direct sunlight and fluctuations in temperature. Ideally, the whiskey should be stored in a cool, dark place, such as a cellar or a cabinet.
Once you open a bottle of Dewar's Scotch, the clock starts ticking on its freshness and quality. The whiskey is exposed to oxygen, which can lead to oxidation and degradation of the flavors. However, the rate at which this happens can vary depending on various factors.
The main factors that can affect the shelf life of an opened bottle of Dewar's Scotch are the storage conditions and the fill level of the bottle. If the bottle is resealed tightly and stored away from excessive heat and light, the whiskey can last for around two years without a significant loss of flavor.
However, if the bottle is not tightly sealed or if it is stored in unfavorable conditions, such as in a warm room or near a window, the whiskey can start to deteriorate much faster. In some cases, it may lose its qualities within just a few months.
It's important to note that while Dewar's Scotch won't necessarily go bad, the changes in flavor and aroma may not be desirable. Over time, the whiskey can become flat, dull, and lose its complexity. The initial vibrant notes of caramel, vanilla, and oak may fade, and the whiskey may taste more muted and less enjoyable.
Personal experience: I once had a bottle of Dewar's Scotch that I had opened and stored in my liquor cabinet for about a year. When I finally decided to pour myself a glass, I noticed a significant difference in taste compared to when the bottle was freshly opened. The flavors seemed less pronounced, and the overall experience was not as enjoyable.
To ensure you get the best experience out of your Dewar's Scotch, it's recommended to consume it within six months to a year after opening. This timeframe allows you to enjoy the whiskey while it still retains its original flavors and characteristics.
While Dewar's Scotch does not technically go bad, it does start to lose its flavor and elements after being opened. Proper storage conditions and consuming the whiskey within a reasonable timeframe are crucial to ensure you enjoy the best quality and taste. So, savor your Dewar's Scotch within the first year of opening it to fully appreciate its unique flavors and aromas.