No more expiration dates on milk at a UK grocery store chain. How to tell if it's fresh enough to consume? Just Sniff It is the advice from those putting this plan in place. The idea is to cut down on the amount of perfectly fine milk that gets poured down the drain because the date has come and gone. Milk sold at Morrisons supermarkets will still have a date on it, but the wording has been tweaked to say the milk would merely be "best before" the date.