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.
After opening, it will still be good for six to nine months, as long as it's been continuously refrigerated. And salad dressings sold in the refrigerated section will be good for six months, or until the date on the bottle, as long as they're stored in the fridge at home.