About 8% of meat tested in Scotland in 2017 was found to contain the DNA of an animal not listed on the labelling, after being tested by local councils. This was revealed following a freedom of information request by the BBC's Good Morning Scotland programme to Food Standards Scotland (FSS).
Information collected by FSS showed that of the 631 dishes examined last year, 48 were found to have been “contaminated” with the meat of an animal not listed on the label or menu description.
Processed foods including Indian-style lamb dishes, kebabs and sausages were among the dishes affected, while inspectors also found some ham pizza toppings were chicken or turkey.
The samples, tested randomly, are taken by Local authorities often by Officers from Environmental Health from restaurants, supermarkets and manufacturers in their area. The samples are then sent to one of the four specialist laboratories for analysis and the results are then submitted to the FSS.
The names of the businesses found to be at fault were not revealed, but FSS did release a number of examples of the contamination discovered. Anything above 1% is considered contamination. The examples include:
- Barbecue pork spare ribs tested from a "primary producer" in Falkirk were found to be chicken
- A lamb passanda from a restaurant in Dundee was found to contain peanuts when it shouldn't have, and it consisted of beef. No lamb at all was detected.
- Also from a restaurant in Dundee a product described as "cooked lamb" was found to contain no lamb at all – only beef
- Several pork sausages from manufacturers and retailers in Stirling were found to contain pork and beef – at higher levels than could be explained through cross-contamination
- A Greek chicken stir fry from a shop on the Western Isles was found to contain both turkey and chicken
- A meal from a restaurant in Angus described as "beef in oyster sauce" was found to consist only of pork
- Scotch beef mince from a shop in Edinburgh was found to contain beef and pork and "would be objectionable to consumers wishing to avoid pork for cultural reasons". This sample was also found to contain genes associated with E.coli however inspectors believed they would have been "killed through the normal cooking process, but have the potential for cross-contamination of other foods until cooked".
- Minced lamb from a shop in Glasgow contained both lamb and chicken.
The National Farmers' Union Scotland (NFU Scotland) said that in some cases the data showed "clear examples of food fraud". However, the figures suggest the rate of contamination in Scotland is not as high as in the rest of the UK where tests in 2017 found that as much as a fifth of meat samples had been misrepresented in this way.
Gary Walker, who runs the Glasgow Scientific Services Lab which tests samples for 16 councils, said: "There can be a very small amount of one meat in the presence of another and it's simply that a piece of machinery hasn't been cleaned properly, so that's not malicious it's just one of those things.
"But we have also seen other things which are a bit more deliberate, where one meat has been substituted for another." He added that cost and availability were two main factors why people might be doing this.
Dr Jacqui McElhiney, head of surveillance at FSS, said councils should take “appropriate action” in such cases, which might include asking businesses to withdraw products.
She said: "We also saw issues with lamb kebabs, where the expectation was that the kebab was 100% lamb.
"And also, maybe more interestingly, pizza toppings that were supposed to be ham, but were actually identified as chicken or turkey."
She also said the number of contaminations were roughly in line with the figures for 2015 and 2016.
“Consumers rightly expect that the food they buy is what it says it is on the label,” she added. “We would urge anyone working within the food industry in Scotland who has suspicions or knowledge about food fraud or food crime to report them.”
Alan Clarke, of Quality Meat Scotland, said Scotland had been a pioneer in quality assurance right through the supply chain.
But he admitted that one case of contaminated meat was "one case too many".
He said: "When you drill down into the figures, yes, there are some examples of genuine error, but there are some which have been unscrupulous operators.
"If you're an unscrupulous operator and you do something outside the law – you will be caught."
NFU Scotland's livestock policy manager John Armour said part of the solution might come about through introducing better country-of-origin labelling.
He said: "We have constantly been pushing for country-of-origin labelling on processed products.
"At the moment, it only exists on fresh cuts of meat, so we would like to see sausages and curries for example in supermarkets with country-of-origin labelling."
Mr Armour said the horsemeat scandal of 2013, where products were found in the UK containing horse DNA, showed the meat was actually coming from other parts of Europe.
He said: "If people knew that, for example the sausages and other processed-meat products they were buying, contained only British and Scottish beef and lamb, pork or chicken, then they can be more confident that it is the real deal."
If you have suspicions or knowledge about food fraud or food crime report them on the free and confidential Scottish Food Crime Hotline on 0800 028 7926 or using the online form at Food Standards Scotland's website.