This time last year I bought two bottles of a good quality 6.6% Scotch Ale to make my Xmas puds. I used one bottle (well DH finished remains off) last year. The second bottle is still on my sideboard. It does have a Best Before date of end of May 2019 on bottle.
Will this second bottle be ok to use in Xmas puds this year? Or have I got to go out in the rain to buy another bottle? Seems a shame to waste it.
It may have become a bit "sharp" to drink, but it will probably be OK for cooking. Open it and have a good sniff (and a taste if you don't mind) if it smells or tastes vinegary you will have to dump it. Beer does go off. It's one of the reasons pubs shifted from real ale to kegs, they are easier to keep.
It is debatable. Beer experts are much like wine experts they get a bit hung up on the taste and so the makers probably chose a date that is very safe. On the other hand it is a long time since May! You are probably safer with a new one. Haven't done mypuds yet. I always use Guiness.