Foreign material devices are a vital part of food production. If a food product including a piece of foreign material is released into the consumer market and there is an issue, it can resonate just as much with consumers as foodborne pathogen contamination. Along with the consequences of a recall, the consumer "word-of-mouth" spread can damage a company’s reputation and sales. Consumers often remember these types of events and the food company behind the issue.
As with all food production, there is always a risk of foreign material contamination. Foreign material is defined as anything that doesn’t belong in the food product. So basically if the ingredient is not listed on the label, it is foreign material. Here are some examples to give you an understanding of how much variety there is of foreign material:
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