As an expert sommelier and brewer, I can provide you with some insights on how long mini kegs last. Mini kegs are a convenient way to enjoy draft beer at home, but it's important to know that they have a relatively short shelf life once opened.
Typically, mini kegs should be enjoyed within two to three days of opening. This is because once the keg is opened, the carbonation starts to escape, and the beer can quickly go flat. Additionally, exposure to oxygen can lead to oxidation, which can negatively impact the flavor and aroma of the beer.
To ensure the best quality and freshness, it's recommended to consume the beer in the mini keg as soon as possible after opening. This is especially true for beers that are highly carbonated or contain delicate hop flavors, as these characteristics can degrade more quickly.
However, I understand that sometimes you may not be able to finish the entire keg within a few days. In such cases, there are a couple of steps you can take to extend the lifespan of the beer. First, make sure to turn the tab on the top of the keg back to its starting position after pouring a serving. This helps to prevent excessive carbonation loss and keeps the beer from going flat.
Next, gently return the mini keg back to the fridge. By keeping it chilled, you can slow down the oxidation process and prolong the freshness of the beer. It's important to note that the longer you keep the keg in the fridge, the more the flavors and aromas may deteriorate. So, it's still best to finish the beer within a few days if possible.
In my personal experience, I have found that mini kegs tend to lose their carbonation and freshness relatively quickly compared to larger kegs or bottled beers. This is why it's important to plan your mini keg consumption accordingly, especially if you're hosting a gathering or event where you want to ensure the best quality beer for your guests.
To summarize, mini kegs should be enjoyed within two to three days of opening to ensure optimal freshness and carbonation. Turning the tab back to its starting position and refrigerating the keg can help extend the lifespan of the beer, but it's still best to consume it as soon as possible for the best taste experience. Cheers!