Q: Question : What does " Best Before Date" mean?

A: Answer  : Best before date is not the same as use by or expires by

Food marked with a ‘Best Before’ date can still be sold after the expiry of that date, provided it is safe and suitable for consumption.

For more information see http://www.foodauthority.nsw.gov.au/consumers/food-labels/label-facts/best-before-and-use-by-dates/