How is sour cream sour?

Sour cream is produced by fermentation and the "sour" applies to its taste. It can "go sour" (spoil or go bad), which is a different situation.

not so much sour, its kind of got a tangy taste. you should just try some.

Sour cream is made by adding lactic acid bacteria to fresh cream, giving it a mildly sour flavour, therefore gaining the name, sour cream Therefore, unsoured sour cream is actually plain old cream...

Cultured sour creamSour cream must contain at least 18% milk fat by weight to carry this designation.Cultured half-and-halfThis version of sour cream is made from half-and-half.Low-fat and light sour...

NO!!! Cream that has gone sour will make you ill. Commercial Sour cream has additives such as lemon juice or similar acids to make it taste sour as opposed to sweet