it takes about 3 weeks or 4 weeks for it to go bad.
Room temperature varies widely, so it is difficult to say. In any case, sour cream should not be left out more than a couple of hours before being refrigerated.
VarietiesCultured sour cream Sour 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 creamThese sour cream versions are made from half-and-half and milk.Sour cream alternativeThis is a designation for fat-free sour cream, which is typically made from skim milk.Nonfat (or fat-free) sour creamThis variety is often labeled "sour cream alternative"This product is made with skim milk and vegetable oil.I got this answer from:www.pccnaturalmarkets.com
While this is not real Cream Fraiche, but it tastes very much like it: Take firm sour cream (not the runny stuff) and and powdered sugar to taste.
It takes about anywhere from 5 - 6 weeks for milk to go sour
Sour cream, ranch dressing, and blue cheese dressing come to mind.
You failed to provide enough information to properly answer your question. It depends on what you're intending to make. I see your category is listed under poultry. If that's what you're intending to make, the simplest answer to your question would be sour cream. Just be sure to add it last or just before serving so that the sour cream doesn't curdle...the general rule is to take it off the heat BEFORE it reaches a boil. Or another idea would be a can of "cream of" soup (cream of mushroom, cream of broccoli, cream of chicken, etc.). This way you can add less salt and it's a safer choice if you don't want to risk curdling the sour cream or if adding the right seasoning is guesswork or is a hassle for you.
Ice cream at room temperature melts.
Creme fraiche is a form of sour cream made using French cooking techniques. You can make it yourself by mixing room temp or slightly warm (not hot) fresh heavy cream (2 cups) with a little buttermilk (3 Tbsp), also room temp, in a glass jar, cover it and leave it in a warmish room temperature place for 24 hours (on top of the refrigerator is the best place for this). Stir every six hours or so. Stir once more and put in the refrigerator for another 24 hours and you will have some wonderful (better than sour cream) stuff!Otherwise, it depends on what you are making. Some recipes can use plain yogurt or cottage cheese blended until smooth or ricotta cheese. If you are using it at the table on a baked potato, for example, you can use the yogurt, ricotta, or cottage cheese.You can make yogurt cheese by placing plain yogurt in cheese cloth and let it drip until the watery liquids drain out (8 or so hours), leaving a wonderful soft yogurt cheese that is very much like sour cream.For baking, substitutions aren't always successful.It mostly depends on what you are making that needs sour cream. But, if my sour cream has gone bad or I don't have any I replace it with ranch dressing or french onion dip or I just do without it!
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To whip cream, it takes about 30 minutes. It might take longer depending on how big of a batch you are making.
8 hours
The construction started in 1886 and opened in 1894.