The authenticity of food is a fundamental right that every party in the food chain, from source to consumer, should expect. Adulteration of food in any way that perverts its intended purity and conceals this from any subsequent customer in the supplychain is food fraud.This may occur through addition, substitution, or removal of key elements of the foods or through misrepresentation via its description. It is often economically motivated but, in some cases, may be criminally motivated. Some good summaries on food fraud and food crime more generally can be found in texts from the US Food & Drug Administration, the European Commission and the Food Standards Agency and, likewise, there are introductory videos on the topic from the FAO and the EU FoodScience Hub.