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The Parmesan Cheese You Sprinkle on Your Penne Could Be Wood

Some brands promising 100 percent purity contained no Parmesan at all.
relates to The Parmesan Cheese You Sprinkle on Your Penne Could Be Wood
Illustration: Steph Davidson
Corrected

The cheese police are on the case.

Acting on a tip, agents of the U.S. Food and Drug Administration paid a surprise visit to a cheese factory in rural Pennsylvania on a cold November day in 2012.