No one would sell to a bid a penny less and no one would lift an offer of a penny more. Thus there would be no trading and no stock market. We need human emotions like greed and fear to get things moving. TV series and movies are all fiction, but the chart of Vulcan Materials is all fact.
How They're Made. Sour cream is made by adding lactic acid culture to cream and sometimes milk to thicken and sour it. In France, crÃ¨me fraÃ®che was traditionally made from unpasteurized cream that naturally contained the right bacteria to thicken it.
To answer some of the questions below: creme fraiche is made from raw unpasteurized milk which contains live lacto-family bacteria colonies. One cannot make creme fraiche from pasteurized milk and/or cream because there are no bacteria to sour and thicken the cream.