Yes. Like any other food, beer has Everything You Need To Know About Expired Beer / Brewer World expiration date. The main enemies of freshness are bacteria, sunlight and oxygen, which oxidize the drink and change its taste. Due to oxidation, the malt taste of dark beer begins to resemble rotten fruits, and light beer generally loses its characteristic shades and becomes like cardboard.
Brewers try to reduce the influence of these factors, but it is impossible to get rid of them completely. Therefore, as the beer gets older, it gets worse. This does not apply to species that are intentionally aged, such as lambic.
Different technologies are used to preserve the drink for as long as possible. It is bottled in dark glass bottles, opaque metal cans and stored in dark places in order to protect it from light. It is not so easy to deal with oxygen — it will end up in the finished product anyway. But thanks to the improvement of the equipment, brewers are constantly working to ensure that its quantity is minimal.
The alcohol in the composition, the boiling temperature and pasteurization protect beer from bacteria. Pasteurization is the treatment of cans and bottles with a jet of steam and boiling water at a temperature of about 140 degrees.
Depends on the type of beer and its storage conditions.
The usual varieties in the store are almost always pasteurized. Therefore, beer is stored for 6-8 months, and after the expiration date, usually only the taste changes. The drink itself, with proper storage , remains safe for about another year. Try to open the bottle. If the drink sizzles and white foam appears, perhaps the beer tastes nothing yet.
Craft breweries often abandon pasteurization in favor of taste, so bacteria multiply in beer. Such drinks have a shorter shelf life and they absolutely cannot be drunk after it comes out.
The same applies to any open beer. In any case, bacteria multiplied in it and released some kind of waste products, so you can get poisoned. It is better to throw away such a drink without regret.