2013 horse meat scandal negative for horse DNA. products were tested but were negative for all foreign DNA. Of the 37% of beef products tested positive for horse DNA, Tesco's inexpensive Everyday Value Beef Burgers tested at 29.1%. All other reported brands had less than 0.3% horse DNA. These products originated from Liffey Meats and Silvercrest Foods in Ireland and Dalepak Hambleton food processing plant in the United Kingdom. Trace amounts of horse DNA were also found in raw ingredients imported from Spain and the Netherlands. Laboratory DNA investigations were requested by the authorities into possible donkey meat adulteration of minced meat products labelled
Tesco after Cohen purchased a shipment of tea from "T. E. Stockwell" and combined those initials with the first two letters of his surname, and the first Tesco shop opened in 1931 in Burnt Oak, Barnet. His business expanded rapidly, and by 1939 he had over 100 Tesco shops across the country. Originally a UK grocer, Tesco has expanded globally since the early 1990s, with operations in 11 other countries in the world. The company pulled out of the USA in 2013, but continues to see growth elsewhere. Since the 1960s, Tesco has diversified into areas such as the retailing of