Lidl customers have been warned that the cookies may contain pieces of metal. The notice follows an initial recall issued last week over the presence of metal in various Tower Gate cookies. Three new products may be affected by the contamination, the supermarket has warned, making them unsafe to eat. The Food Standards Agency said: “Lidl is extending their recall of various cookies because they may contain pieces of metal. “The possible presence of metal makes these products unsafe to eat. The product recall has been updated to include additional products.” The products concerned are: Tower Ga…