A kind of cream · also called Soured cream

2 views: its portrait, and how it looks in the comparison photos.
About
Sour cream is a thick, fermented dairy product that weighs about 8.4 ounces (239 grams) per cup.
At roughly 8.4 pounds per gallon (1.01 grams per milliliter), sour cream has nearly the exact same density as plain water. A typical 16-ounce (454-gram) grocery tub holds about 1.9 US cups of product. Because it is cultured rather than whipped, it contains very little trapped air and is far denser than whipped cream. Its thick texture allows it to fill containers completely without leaving large gaps.
From Wikipedia
Sour cream is a dairy product obtained by fermenting regular cream with certain kinds of lactic acid bacteria. The bacterial culture, which is introduced either deliberately or naturally, sours and thickens the cream.
Read more on Wikipedia →Text from Wikipedia’s “Sour cream” article, CC BY-SA 4.0.
1 on the site
One cup weighs
8.43 oz (239 g)
Quick answer
One US cup of sour cream weighs about 8.4 ounces (239 grams). This makes it almost identical in weight to an equal volume of whole milk or water.
Typical figures, the same ones every comparison on the site uses; real ones vary.
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