From the University of Idaho:
Foreign material is any material that is not the potato tuber. It is “trash” or “garbage” in potatoes. Many foreign materials originate in the field, but others enter the product stream through equipment and during storage and handling. Whether potatoes are destined for the fresh market or processing, foreign material is a great concern to the Idaho potato industry. By minimizing foreign material in the field, in storage, and in the processing plant, growers and processors help maintain a high-quality product, safe standards, and consumer confidence.
The video “Continuing to Manage Foreign Material for Quality Idaho Potatoes” outlines ways you can reduce foreign material in your potatoes. The video (English and Spanish versions) are available on-line at www.uidaho.edu/cals/potatoes/food-and-farm-safety.
New this year: Remove Foreign Materials poster. Download and print a poster (16″ x 24”) that provides examples of common foreign material found in potato production. Display the poster in areas to educate employees and as a reminder to remove foreign material.
Download a printable poster and view on-line educational videos at www.uidaho.edu/cals/potatoes/food-and-farm-safety