Beer, a traditional drink with a long history, is loved for its rich foam and distinctive malt aroma. But have you ever wondered how long a bottle of beer lasts before and after opening?

Unopened bottled beer

In general, unopened bottled beer has a shelf life of about 6 months to 1 year at room temperature. This time depends on the type of beer, the alcohol content, and how the glass beer bottle is packaged. For example, some high-alcohol beers may have a longer shelf life because the alcohol itself has a preservative effect. Some beers with added preservatives also have a relatively long shelf life.

Storage conditions

To ensure the freshness and taste of your beer, proper storage is crucial. Here are some tips for storing beer:

Store away from light: Light, especially ultraviolet light, destroys the flavour substances in beer, leading to a deterioration in taste. Therefore, it is best to use the amber beer bottles,or green beer bottles to store beer in a cool, light-proof place.
Constant temperature and humidity: Fluctuations in temperature affect the flavour and stability of the beer. The ideal storage temperature is around 10-15 degrees centigrade.
Avoid shaking: Frequent shaking can affect the carbonation level in the beer, resulting in too much or too little foam when the beer bottle is opened.

Bottled beer after opening

Once a bottled beer has been opened, its shelf life is significantly reduced. It is usually best to consume opened beer within 24 hours to ensure the best taste. If you need to keep it longer, you can take the following measures:

Seal: Use caps or cling film to seal the tops of bottles to minimize the entry of air.
Refrigerate: Store beer in the refrigerator to slow down the rate of chemical reactions in the beer and extend the shelf life.
Avoid light: even in the fridge, you should avoid placing the beer in a light place.

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