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It can, but not for long.
Potato salad should not be left unrefrigerated for more than two hours. Less time is better. In fact, if the ambient temperature is around 90°F, cut that time to less than 1 hour.
Roasted turkey should not be left unrefrigerated for more than two hours.
About 5 days.
Salad should be good unrefrigerated for up to two hours.
Yes. Puff pastry (a.k.a., fylo-dough) consists of layers of starch separated by layers of butter. This is why it gets flaky and yummy when you cook it. But the butter in it can go rancid if you leave it unrefrigerated for too long.
Not a good idea! It would not harm you, but it will change the consistency and texture, and....well it's just not going to taste the same.I would not recommend freezing potato salad.
Not long
Yes you can as long as it hasn't been sitting out to long I would say 30 seconds is the maximum time
No.
Potato salad might keep up to 5 days if stored properly in the refrigerator.
Potato salad will never be as good as when it was first made. Use it within a day or two. Depending on what you put in your potato salad will depend on how long your salad will last. If you put eggs in your salad then you have 3 days to use it up in. If you omit the eggs then you have about 5 days as long as the salad doesn't sit out and get warm since it has mayonnaise in it.