Why is there an expiration date on sour cream?

Question: Why is there an expiration date on sour cream?
- Keywords:
  expire,
  food,
  sour cream
Asked by anon-200955 to Rosemary, Oliver, Leigh, Jordan, Hannah, David on 4 Mar 2019.
- Oliver Gordon answered on 4 Mar 2019:
  
  Bacteria make things go bad. Sour cream has lots of bacteria. You can’t stop them from multiplying, only slow them down, because they have all that food to eat! And then you have loads of bacteria, and eating them will make you ill. Ew.
  
  P.S. Team Oliver represent!

Question: Why is there an expiration date on sour cream?