As a sommelier and brewer, I have had the opportunity to work with a wide variety of beers and packaging methods. When it comes to growlers and crowlers, the general recommendation is to consume the beer within 7-10 days after it has been sealed at the brewery. However, it's important to note that this is not an exact science and there can be some variation in the freshness and quality of the beer.
The reason for this recommended timeframe is that growlers and crowlers are typically filled manually at the brewery, unlike the state-of-the-art canning and bottling lines used for commercial beer production. While every effort is made to ensure the best quality and freshness, the manual filling process may introduce a small amount of oxygen into the container, which can lead to a faster deterioration of the beer's flavor and aroma.
That being said, it is entirely possible that the beer may stay fresh for longer than 7-10 days. I have personally enjoyed growlers and crowlers that were still tasting great even after a couple of weeks. However, this can vary depending on factors such as the style of beer, the specific brewery's packaging techniques, and how well the container is sealed. It's always a good idea to check for any signs of spoilage, such as off-flavors or aromas, before consuming the beer.
To maximize the freshness and shelf life of the beer in a growler or crowler, there are a few tips you can follow. First, make sure to store the container in a cool and dark place, such as a refrigerator. This helps to slow down the oxidation process and keep the beer as fresh as possible. It's also important to handle the container with care and avoid excessive shaking or agitation, as this can cause the beer to lose carbonation and potentially affect its taste.
If you find yourself with a partially consumed growler or crowler, it's best to consume it as soon as possible. The more air that is introduced into the container, the faster the beer will deteriorate. One option to extend the freshness is to transfer the remaining beer into smaller, airtight containers such as glass bottles or stainless steel growlers that can be sealed more tightly.
While the general recommendation is to consume beer from a growler or crowler within 7-10 days, the actual freshness and quality can vary. It's always best to check for any signs of spoilage and consume the beer as soon as possible for the best experience. Remember, beer is best enjoyed fresh, so don't hesitate to crack open that growler and savor the flavors while they're at their peak!