Waitrose has become the latest supermarket to pull beef burgers from its selves after horsemeat was found in burgers made by one their suppliers.
The company said it had taken frozen burgers made by Dalepak, one of the firms at the centre of the horsemeat contamination investigation, off sale "as a precaution" when it had its accreditation suspended.
In a statement, Waitrose said its burgers had since been tested and were found to be 100% beef:
"The ingredients in our burgers are simple with all meat traceable back to British farms that we know."
"Our technical team visited the Dalepak site last week and were happy that our products were produced to our high specification and separately from other companies' products (ours are produced at 6am before other any other burgers)."
The horsemeat scandal demonstrates how long and complicated the food chain we all depend on is. Regulating our food supply is expensive.
Some of the best, and worst, jokes and gags from Twitter users discussing the discovery of horse DNA in some supermarket beef burgers.
We've seen the jokes on Twitter but the discovery of horse and pig DNA in beefburgers poses a serious question; where did it come from?