Decanting is a common practice when it comes to serving and storing different types of alcohol, including brandy. However, it's important to understand that the evaporation rate of brandy and other spirits can be influenced by various factors, such as the type of decanter and the conditions in which it is stored.
Brandy, being a spirit with a higher alcohol content, can generally last for a longer period of time in a decanter compared to wine. While wine may only last a few days once opened, brandy can be stored in a decanter for months or even years, depending on the conditions and the type of decanter used.
When it comes to decanters, there are different styles and designs available. Some decanters have a loose fitting glass stopper, allowing for slow evaporation over time. This type of decanter is ideal for storing brandy for a longer period, as the slow evaporation helps to preserve the flavors and aromas of the spirit.
However, it's important to note that even with a loose fitting stopper, some evaporation will still occur. This is due to the volatile nature of alcohol, which can escape through small gaps or openings in the decanter. Therefore, if you plan to store brandy in a decanter for an extended period, it's a good idea to check the level of the spirit periodically and top it up if necessary.
The rate of evaporation can also be influenced by the conditions in which the decanter is stored. Factors such as temperature, humidity, and exposure to light can all affect the evaporation rate. It's best to store the decanter in a cool, dark place to minimize evaporation and preserve the quality of the brandy.
In my personal experience as a sommelier and brewer, I have found that brandy stored in a decanter with a loose fitting stopper can last for several months without significant loss of quality. However, it's always important to use your senses to assess the condition of the brandy before consuming it. If you notice any off-putting aromas or flavors, it's best to discard the spirit.
To summarize, brandy can evaporate in a decanter, but the rate of evaporation can be influenced by the type of decanter, storage conditions, and the length of time it is stored. With a loose fitting glass stopper and proper storage, brandy can be stored worry-free for months, and in some cases, even years. However, periodic checks and topping up may be necessary to maintain the desired level of the spirit.