The Chobani Greek yogurt company says the mold that caused some of its products to bloat or swell is not normally harmful to people. On Thursday, Chobani said, "To be extra cautious, we have moved from a voluntary withdrawal to a voluntary recall." PR NEWSWIRE hide caption

itoggle caption PR NEWSWIRE

The recent yogurt boom of upstate New York has meant more jobs in places like the Chobani plant in South Edmeston, but it has not led to a bigger dairy herd in the state. Mike Groll/AP hide caption

itoggle caption Mike Groll/AP

Most of the gleaming steel tanks outside Fage's yogurt factory hold milk. One, however, holds the yogurt byproduct whey. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR