Tesco, the United Kingdom's biggest supermarket chain, took out full-page newspaper ads on Thursday, Jan. 17, 2013, to apologize for an unwanted ingredient in some of its hamburger: horse meat. The contrite grocer told customers that "we and our supplier have let you down and we apologize." (AP Photo/Sang Tan)
Tesco, the United Kingdom's biggest supermarket chain, took out full-page newspaper ads on Thursday, Jan. 17, 2013, to apologize for an unwanted ingredient in some of its hamburger: horse meat. The contrite grocer told customers that "we and our supplier have let you down and we apologize." (AP Photo/Sang Tan)
**FILE** A photo from April 21, 2009, shows Tesco shopping bags being carried in London. (Associated Press)
**FILE** A photo from April 21, 2009, shows Tesco shopping bags being carried in London. (Associated Press)
