How would you feel if you knew that the fresh bag of coffee you bought was actually composed of potato flour and acorns instead of your favorite Columbian blend?

This year, nearly 800 new records of such "food fraud" cases were added to the United States Pharmacopeial Convention's (USP) Food Fraud Database, an increase of more than 60 percent from just last year. The latest online repository includes food that has been purposely mislabeled, replaced with other ingredients, diluted, and tampered with for the purpose of economic gain. It may shock you to find that many of the food products that are most vulnerable to manipulation in today's food supply—and tagged at the full market price—are just your common grocery items.