McDonald's has announced it will no longer use a controversial food additive dubbed "pink slime" to its world-famous burgers.
The filler is made from spare beef trimmings that are treated with ammonium hydroxide to kill any bacteria.
The additive came under fire when Chef Jamie Oliver campaigned against it on his "food revolution" TV show. McDonald's officials say the decision was not based on any particular event.
The USDA approved the "pink slime" additive and said the use of ammoniated beef trimmings is safe.
Two other major fast food chains have also reportedly stopped using the additive.