Hello, I'm a beer enthusiast with a knack for all things related to brewing and serving beer. I've spent quite a bit of time researching and experimenting with different methods to keep kegged beer fresh and enjoyable.

When it comes to the shelf life of a keg, there are several factors to consider. The most important of these is temperature. Beer should be stored in a cool environment, ideally between 35-40°F (2-4°C). This helps to slow down the aging process and prevent the growth of bacteria and other spoilage organisms.

Another key factor is the use of CO2 to push the beer. This not only carbonates the beer but also helps to keep oxygen out, which is one of the main culprits in beer spoilage. By using CO2, you can significantly extend the life of your keg.

From my experience, a Corny keg (a commonly used half-barrel keg) can last for several months if properly maintained. I've personally had a keg last for up to three months without any noticeable decline in quality. However, it's important to note that this was with regular consumption, not just letting it sit.

To maximize the freshness of your keg, here are some additional tips:

1. Seal the keg tightly after each use to prevent air from entering.

2. Clean the keg thoroughly before filling it with beer to avoid any residual contaminants.

3. Rotate your stock if you have multiple kegs, so that each keg is consumed before it has a chance to sit for too long.

4. Monitor the temperature closely and adjust your cooling system as needed to maintain the ideal range.

5. Check for signs of spoilage regularly, such as off odors or flavors, and discard the keg if anything seems amiss.

Remember, while a keg can last for a long time, the quality of the beer will gradually decline over time. It's always best to enjoy your kegged beer as fresh as possible to experience the full range of flavors and aromas it has to offer.

read more >>

If the beer is being kept cool and you are using CO2 to push (which I assume you are) then it can last for months. I think the longest I've ever had a Corny keg last is three months, but that was finishing it, not spoilage. Kept refrigerated, sealed and under CO2, it should last longer than it takes you to drink it.Jan 21, 2011read more >>