When stored at room temperature, you can expect beer to last for six to nine months beyond the use-by date. Refrigeration increases this time period to up to two years.
Keeping beer at room temperature can drop a beer’s shelf life from nearly six months to only a few weeks, and exposing the same beer to very warm temperatures can affect its flavor in a matter of a couple of days.
Short answer, no. Beer isn’t like milk. With age, it doesn’t actually expire or become unsafe to drink. Old beer’s taste, however, will absolutely change.
It would be safe to drink , in the sense of it would not cause any harm to you . Beer is very resistant to heat, it will preffer to be stored in a cold location, but will probably not go bad at room temperature for extended periods of time. What really spoil it is is UV light.
about 4 to 6 months
Here’s the bottom line: drinking a ten – year – old beer is certainly safe . You won’t get sick from drinking old beer , nor will you suffer any major side effects (aside from a foul taste in your mouth and drunkenness).
The consensus is the refrigeration makes no difference, as long as it’s stored at room temperature. Most of these more delicate and questionable drinks will feature an expiration date on the bottle. If not, it’s a good idea to write your open date on the bottom in a Sharpie.