As an expert sommelier and brewer, I can provide you with a detailed answer to the question: Does rum get better with age in the bottle?
Rum, unlike wine, does not continue to age once it is bottled. The aging process for rum takes place exclusively within the barrels. When rum is distilled, it is typically clear and colorless. It gains its flavor, aroma, and color from the aging process in wooden barrels, usually made of oak. These barrels impart unique characteristics to the rum, such as notes of vanilla, caramel, and spices.
Once the rum has been aged to the desired level, it is usually filtered and then bottled. At this point, the aging process stops. The rum will not continue to develop or change in flavor or character while sitting in the bottle. Therefore, that bottle of 10-year-old rum you purchased five years ago will still be a 10-year-old rum today, even if you haven't opened it.
However, it's important to note that while rum may not age in the bottle, it can still undergo some changes over time. Two main factors can affect the taste and quality of rum in the bottle: evaporation and oxidization.
Evaporation, also known as the “angel's share,” occurs as the rum interacts with the air through the cork or cap. This gradual loss of liquid can lead to a more concentrated flavor profile in the remaining rum. Some people actually prefer the taste of older, more concentrated rums due to this evaporation effect.
Oxidization is another factor that can impact the quality of rum over time. As the rum is exposed to air, it can undergo chemical reactions that may alter its taste and aroma. This process is similar to what happens when wine is exposed to air and begins to oxidize. While oxidization can sometimes enhance the flavors of certain spirits, it can also lead to a loss of vibrancy and freshness in others.
It's worth mentioning that the impact of evaporation and oxidization will vary depending on factors such as the type of bottle closure (cork, screw cap, etc.) and the storage conditions (temperature, light exposure, etc.). Proper storage, such as keeping the bottle sealed and away from direct sunlight and extreme temperatures, can help minimize these effects.
Rum does not age in the bottle like wine does in a cellar. The aging process for rum occurs exclusively in the barrels before it is bottled. However, the taste and quality of rum can still change over time due to evaporation and oxidization. It's important to consider these factors when storing and enjoying your bottle of rum.