The Sainsbury's Cooked Mussels (frozen) products come in pack sizes of 300g. The batch code is 2653152 and the best before date on the affected items is 08 September of next year (2021). In a risk statement, the supermarket giant warns: "The presence of salmonella in the product listed above. "Symptoms caused by salmonella usually include fever, diarrhoea and abdominal cramps." Read More Related Articles Read More Related Articles Point of sale notices will be displayed in all retail stores that are selling this product. These notices explain to customers why the product is being recalled and tell them what to do if they have bought the product. Sainsbury's operates stores across Birmingham and throughout the wider West Midlands region. That means you have plenty of chance to return the affected item if you have bought one.