There's probably a real, scientific explanation for how long it can go, dealing with pasteurization
and all those other -ations. But truly, it just comes down to how adventurous
you are. The expiration date
is very much a psychological
factor -- the passing of the date transforms
in your mind. So you smell what you expect to smell, taste what you want to taste. You can be daring
, or not.
I always just throw it away
. The guilt
comes right after.