Public Release: 

How milk becomes cheese (video)

American Chemical Society

WASHINGTON, May 17, 2018 -- Making cheese is an ancient exercise in preserving the nutritional value of milk. And it's also pretty tasty. With help from the St. James Cheese Company in New Orleans, Reactions explains how milk becomes cheese, why microbes make it taste better, and why cheese is yellow:


Reactions is a video series produced by the American Chemical Society and PBS Digital Studios. Subscribe to Reactions at, and follow us on Twitter @ACSreactions.

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