White potatoes do not taste good after they have been frozen. You will notice a change in texture, lack of flavor and the potatoes lose nutrients. Mashed potatoes are so easy and quick to prepare that it is best to prepare eat them fresh. They are fine refrigerated for a couple of days.
forever
No, of course not. I can't give you a long drawn out answer but it is definitely not.
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No. ----- You really didn't cook the potatoes long enough if they are still crunchy.
Bacteria. Specifically S.pyogenes. This bacteria is present in the environment, and loves to grow on the starch in potatoes and rice. Don't leave your potatoes out of the fridge uncovred for too long, and definitely do not eat potatoes that have been in the fridge for more than a week. i won't even eat refrigerated mashed potatoes after 3 days.Other bacteria will also infest mashed potatoes if you put dairy in it, and the dairy will sour just as milk does after staying in the fridge for too long. No more than three days storage for potatoes with dairy. When you reheat do it in the oven or stove top. reheating potatoes in the microwave typically does not keep them hot enough for long enough to kill the bacteria.The good news is majority of the "food poisoning" you would get from typical potato bacterias would only last 12-24 hours...
3 days.
Indefinately often
7 years
Blackberries (the fruit) will last about three months.
I don't know, but it'll last for a long time in the freezer.
Butter can last up to 12 months in the freezer. See Related Links.
about 2 days