Surely if anything we are lucky it was horsemeat? An unauthorised substance was introduced to the food industry possibly by accident but most probably not, and it is clear our ability to detect it was at best feeble. It could have been anything, and there may be a lot of other things still undetected which are far less nutritious. As we know from Victorian times, adulteration of food is very common when price has a high profile. So all of this testing of products for horsemeat is off course: we should be putting our effort into a system where supermarkets et al are responsible for ensuring there products are what they claim, rather than relying on assurances from their suppliers.