A mass recall of food products has been ordered by supermarkets including Tesco and Sainsbury's after a batch of potatoes used as ingredients in them was found to contain small pieces of metal.Tesco, Sainsbury's and the Food Standards Agency recalled a number of potato salads on Friday (May 8).A spokesman for the Food Agency said: "If you have bought one of these products, do not eat it. Instead, return it to the store from where it was bought for a full refund."Sainsbury's and Tesco...
