What Food Standard is the least understood of all the food standards in the Food Standards Code? What food standard seems to allow inclusion of ingredients that do not appear on the label, is viewed with suspicion by consumers, is talked about in whispers in the Food Industry, is regarded as authorising borderline deception by groups with specific dietary requirements, and considered to be the inner secret of many confidential proprietary formulations in food? The answer is Standard 1.3.3 - Processing Aids. This article of 2,500 words explores and attempts to demystify many of the myths and misunderstandings.