Is it safe to eat unopened sour cream that was left out overnight?

Answer 1

No it is not. I mean, you can eat it. But it will not taste right. And it might give you some tummy troubles.

That is only partly true. Sour cream and yogurt are made the exact same way... by adding live cultures to milk(for yogurt) or cream(for sour cream), and then leaving them at room temp for up to several days. As with anything, eventually it will "go bad", but if it tastes good, then it is good. Cottage cheese can be homemade by adding some vinegar to a gallon of milk and leaving it on the counter for a day. Then, rinse the vinegar and refrigerate.

As a side note for healthy living, I always use plain yogurt instead of sour cream. It has all the taste without the fat, and none of the added chemicals and fake sweeteners that Fat Free Sour Cream has. Try it.

Answer 2

No. Food that requires refrigeration should never be considered safe if left unrefrigerated overnight.

Answer 3

1. no
2. because its sour
3. because that's just nasty

Answer 4

No, it should not be eaten if left out! It will spoil if not refrigerated. Plus, harmful bacteria could grow in it. And you could get food poisoning.