Remember that the pursuit of happiness, in the Declaration, is not a quest or a pastime, but an unalienable right.. Everyone has the right to actually be happy, not just try to be happy. To use a metaphor: You don't just get the chance to make the baseball team, you are guaranteed a spot.
How long does an unopened package of mayonnaise last at room temperature? Properly stored, an unopened package of mayonnaise will generally stay at best quality for about 3 to 4 months after the date on the package.
Mayo will last up to 3 â 4 months after the expiration date as long as it was store bought and stored at the correct temperature after opening. Meats: Fresh meat should not be eaten a day or two after its expiration date, but if you freeze your meats, they will last for up to a year or longer!