Do other types of sour cream (reduced-fat, fat-free, sour-cream dips) stay fresh longer than regular sour cream?

No--shelf life depends more on how sanitary a company’s overall processing methods and equipment are. Clean ingredients, a hygienic environment, and sanitary equipment keep a product fresh longer by minimizing the level of bacteria.
 
Source(s):
Dr. Robert Bradley, professor emeritus of food science, University of Wisconsin

 
 

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