Beer can last in the fridge for varying lengths of time depending on the type of beer and storage conditions:

• Unopened beer generally maintains its best quality for about 6 to 8 months in the fridge if stored properly, with some sources extending this up to 12 months for mass-produced lagers and pilsners

• Craft beers typically have a shorter fridge shelf life, around 3 to 4 months , and unpasteurized beers last about 2 to 3 months in refrigeration

• Stronger beers like stouts or high-alcohol varieties can last up to a year or more in the fridge

• Refrigeration significantly slows down the aging and oxidation processes, preserving beer quality much longer than room temperature storage, where beer lasts about 5-9 months unopened

• Once opened, beer should be consumed within a few days (generally 1-3 days) for optimal flavor regardless of type

• Beer does not become unsafe to drink after these times but will lose freshness, developing stale or off flavors

• Avoid freezing beer as it can cause the container to burst and introduce oxygen, spoiling the beer

In summary, for best taste and quality, consume unopened beer within 6-8 months in the fridge, shorter for craft or unpasteurized beers, and drink opened beer within days