Just to be clear: Burger King says there is no horse meat in its burgers. And just to make sure, Burger King tells Bloomberg Businessweek, it plans to test its beef patties for foreign DNA, including horse, pork, and lamb.

Details for DNA testing have not been worked out, and no timeline has been set for implementing the new procedures, says Diego Beamonte, Burger King’s vice president of global quality. Burger King will test specifically for equine DNA following revelations that food processor Silvercrest Foods sold beef products containing horse meat to other retailers, including Tesco. Both companies have severed ties with Silvercrest, and Tesco has also said it will do DNA testing on all of its meat products.