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.
Mass-produced mayonnaise brands are pasteurized and contain preservatives, which is not necessarily true of homemade mayonnaise. If the potato salad has been left out of the refrigerator for any length of time, such as leftovers from a meal, it should be used within one day.