upset stomic or diareea
No. Dangerous bacteria have developed inside the unopened package.
Yes, it is totally fine. Sour/spoiled dairy is perfectly safe for most consumers. Sour cream is just spoiled/soured cream, as its name implies. If the milk was sour or spoiled, the frosting may taste different, but there are no health implications whatsoever with using sour dairy.
By eating your sandwich
Spoilage always means that the food is not fit for consumption. As for souring, this isn't always the case. Souring is sometimes referring to a fermentation process (eg. fermenting milk makes it sour, but still safe to consume).
Cream cheese will turn green when it is spoiled. It is not like cheddar cheese when it turns green. You can cut off the mold on cheddar and the rest will be fine to eat. Not cream cheese. Once mold has formed, it is best to throw out all the pack.
Eating a big potato with with butter and sour cream.
Nope. Sour cream has to do with One certain ingredient and Sour ice cream is like sour milk but the sour in the ice cream is the milk:)
no, it will become very hard and will taste like spoiled milked once defrosted
No. Sour cream and heavy cream have different functions, and produce different flavors. If you don't have sour cream or heavy cream handy, find a cheesecake recipe that doesn't call for them.
No Sour gream and heavy cream are two different items.
Spoiled milk.
sour milk