Almost 200 people have fallen ill after an outbreak of salmonella linked to pork scratchings.
The Food Standards Agency said 176 people become sick and the illness was linked to eating a bad batch of the favourite pub snack.
The group issued a recall of some packets of Mr Porky, Jay’s and The Real Pork Crackling Company products.
All of the products are made by Tayto Group Ltd; the largest British-owned crisp and snack manufacturer has said production would resume once all necessary checks had been completed.
The cases of food poisoning date back to September 2020, although the link to the pork scratchings was only established this month.
Tina Potter, head of incidents at the Food Standards Agency, said: "We are advising consumers not to eat any of the products listed in the FSA alert.
“It is really important that consumers follow this advice to avoid the risk of becoming ill with salmonella poisoning.
"The food business involved has voluntarily suspended its production to put additional controls in place to improve the safety of their products and they have decided on a voluntary basis to withdraw and recall all of the products within shelf-life produced at this site.”
Packets of Mr Porky Crispy Strips, Mr Porky Crackles, Mr Porky Prime Cut Scratchings, Jay's Pork Scratchings and The Real Pork Crackling Company Pork Crunch were in the process of being recalled.
Symptoms of salmonella poisoning include diarrhoea, nausea, vomiting and fever.
Infections often prove to be mild but they can become severe in the very young, old and those with weak immune systems.
Dr Lesley Larkin, an infections specialist at Public Heath England, said a link to the products had been established via genome sequencing and its investigations.
Dr Larkin said: "These investigations, together with those carried out by local authorities, have indicated the source of infection is pork scratchings produced by a single company in the UK.
"The FSA has acted on these findings to mitigate any further risk to public health from the contaminated food.
“Salmonella can be spread from person to person, so anyone affected should adhere to good hygiene practices including washing your hands thoroughly after using the bathroom and avoiding handling food for others if you have symptoms.”