Nov 1, 2013 — Spices get dirty because of the way they're grown, stored and harvested, according to the head spice buyer for McCormick & Company. Because there are so many small farmers and shippers worldwide, that end of the supply chain is hard to control. So spices need to be sterilized before they hit supermarket shelves.
Aug 29, 2013 — Spices may add more than flavor to your food: Some harbor dangerous bacteria. Contamination has caused big outbreaks in the United States, and the FDA is looking into how to reduce the risk.