McDonald’s and two other fast-food chains have stopped using an ammonia-treated burger ingredient that meat industry critics deride as “pink slime.”
The product remains widely used as low-fat beef filling in burger meat, including in school meals. But some consumer advocates worry that attacks on the product by food activist Jamie Oliver and others will discourage food manufacturers from developing new methods of keeping deadly pathogens out of their products.
The beef is processed by Beef Products Inc. of Dakota Dunes at plants at Waterloo, Iowa, and in three other states. One of the company’s chief innovations is to cleanse the beef of E. coli bacteria and other dangerous microbes by treating it with ammonium hydroxide, one of many chemicals used at various stages in the meat industry to kill pathogens.
