As a sommelier and brewer, I can provide some insights into how long vodka can stay good in a decanter. Vodka, being a spirit, has a much longer shelf life compared to wine. However, it is still important to consider some factors that can affect its quality over time.
Generally, vodka can last indefinitely when stored properly in a sealed bottle. The high alcohol content (usually around 40% ABV or more) acts as a preservative, preventing the growth of bacteria or other contaminants. This is why vodka is often used as a base for homemade infusions or liqueurs that can be enjoyed for months or even years.
When it comes to decanting vodka, the primary purpose is usually for aesthetic reasons rather than preserving or improving the spirit's flavor. Decanters are often used to showcase the vodka and enhance the overall drinking experience. However, it's important to note that prolonged storage in a decanter can lead to some changes in the vodka.
Over time, vodka in a decanter may experience some oxidation, which can lead to a loss of flavor intensity. The exposure to air can also cause the vodka to slowly evaporate, potentially altering its taste and aroma. While vodka is less prone to oxidation compared to wine or other spirits, it is still a good idea to consume the decanted vodka within a reasonable time frame to enjoy it at its best.
Generally, I would recommend consuming the vodka within a few months to a year after decanting. This timeframe allows you to enjoy the vodka while it retains its original qualities and flavors. If you're planning to store the vodka for an extended period, it's advisable to keep it in its original sealed bottle rather than a decanter.
It's important to store the decanter in a cool, dark place away from direct sunlight and extreme temperature fluctuations. Light and heat can accelerate the oxidation process and potentially degrade the quality of the vodka. Also, make sure to clean the decanter thoroughly before using it to prevent any residue from affecting the flavor of the vodka.
In my personal experience, I have found that vodka stored in a decanter for over a year tends to lose some of its initial crispness and smoothness. While it may still be drinkable, the flavor profile may become less vibrant and the vodka may have a slightly different character compared to when it was first decanted. Therefore, I would recommend enjoying your decanted vodka within a reasonable timeframe to fully appreciate its intended qualities.
To summarize, while vodka can last indefinitely in a sealed bottle, it's best to consume it within a few months to a year after decanting. Prolonged storage in a decanter may lead to oxidation and a loss of flavor intensity. Remember to store the decanter properly and clean it thoroughly to maintain the vodka's quality. Ultimately, the enjoyment of vodka is subjective, so feel free to experiment and find what works best for your palate.