Food safety officers have visited one of Tayside’s busiest supermarkets following allegations of hygiene breaches.
A team from Dundee City Council conducted the probe into bakery facilities at Asda’s Milton of Craigie store.
Allegations had been made in a letter that was also sent to bosses at the supermarket’s head office in Leeds.
The letter writer, who is said to be an Asda employee, said they had been moved to speak out after witnessing several worrying practices.
Asda has denied the claims have any basis in fact and has given its store and staff a clean bill of health.
The City Council has said that it is still investigating and has yet to reach a conclusion.
In the letter, the whistleblower alleged baking trays were old and rusty with non-stick coatings that could flake-off into products.
It is also alleged that products such as doughnuts were defrosted for use, only to then spend days sitting in fridges waiting to be put out on shelves.
Trays used to cook sausage rolls were said to be reused for vegetarian products without being properly cleaned, leading to their contamination with meat fat.
And finally, a robin was said to be living in the roofspace above the bakery, with claims it “pecked at food” and fouled materials and equipment.
An Asda spokeswoman said that following a visit by council officers and senior management the accusations had proved “unfounded”.
The UK’s big supermarket chains have consistently fallen foul of environmental health inspectors, who found several failing Tesco, Asda, Sainsbury’s, Morrisons and Aldi stores during 2012 and 2013.
Waitrose and Lidl were the only “big seven” chains were without failing stores.