Storing Fresh Fluid Milk: Milk should not be left out at room temperature. Pour milk to be used into a serving container and return the original container to the refrigerator. Do not return unused milk that has been sitting out to its original container where it could contaminate the remaining milk.
Say goodbye to days of throwing out your half-eaten tub of yogurt, because this is another dairy product you can eat after its package labels it expired.. Open yogurt will spoil sooner than unopened yogurt, but sealed yogurt will usually last one to two weeks past the sell-by date.
If it is an 'expiry date', you shouldn't really consume the product after that date - an expiry date is the date after which something in the product goes off, and is not as safe to consume.) However, this date is usually a 'sell by' date, as mentioned above, and yogurt most often lasts for some time after this date - usually for 2 to 3 weeks after this date. Yogurt is made from milk which is pretreated to ensure that the only bacteria left in the yogurt are not harmful, and are simply 'good bacteria'.