Now, experts have revealed a secret code that can help decipher how fresh items are. According to consumer website Which?, it all depends on which supermarket you're in.

A woman talks about how she and her siblings cracked a secret code their mother came up with to prevent them from figuring out the gifts left for them under the Christmas tree.

Now, experts have revealed a secret code that can help decipher how fresh items are. According to consumer website Which?, it all depends on which supermarket you're in.