ADA, as it is nicknamed, is commonly used in yoga mats, flip-flops and insulation to help them fluff up and stay squishy. Subway sandwiches, however, turn out to be only one of many foods using ADA.

The government is under pressure to keep so-called ‘yoga mat additives’ also used in bread flour from making their way into UK bakeries and supermarkets. Chemical substances commonly added to baked ...