On Tuesday, the Food Safety Authority of Ireland (FSAI) revealed that they found horse DNA in frozen beef burger patties sold in the UK and Ireland by major supermarket chains Aldi, Iceland, Lidl, and Tesco. Nine of the ten patties tested had very low levels of horse DNA, but the patty from Tesco tested for 29 percent horse DNA.
The patties had been processed at two plants in Ireland—Liffey Meats and Silvercrest Foods—and Dalepak Hambleton in the UK. The source of contamination is thought to be from horse-derived high-protein powders from Spain or The Netherlands, not from fresh horse meat, say Irish beef processing group ABP, owner of Silvercrest and Dalepak. Testing is still being done to find out how the contamination took place.
For more updates on the contaminated burgers, check out the latest food safety news from the Guardian.