Nancy2 wrote:
>
> What happens if you use AP flour after it "expires?"

Nothing happens as long as it stays dry. I buy ap flour and pour it into
a tupperware canister and toss out the wrapper. I've never once thought
about it getting too old. My flour now is old but I have no idea how old
nor do I care. It works fine. I *think* I buy new about once per year.
Just a guess. If longer, no worries.