Is it dangerous to drink expired beer?
Beer is completely safe to drink after its best by date. Usually, it is the best by date that is mentioned for the beer, not the expiry date.
The difference between a best by date and an expiry date is that if a product goes beyond a best by date, it is still safe to consume, however, if it is past the expiry date, you better have a medical insurance in place if you are even considering consuming it. The best by states that the product will retain its flavour and taste up to that date, and beyond that date there will be a definite degradation in its taste. So if you are ok with the cardboardy and old taste, then you can go ahead and not let the beer go to waste. An expiry date indicates that the product after the mentioned date is not at all safe to consume and should be avoided ingesting at all costs. Beer products usually have a best by date rather than an expiry date, due to the very low pH levels in the beer which make it almost impossible for pathogens to breed. In conclusion, you are completely safe from drinking beer post its best by date, and there is rarely such a thing as expired beer.