The supermarket put out the warning this week over its own brand salted dairy butter.
It warned that the £1.75 product could contain bits of blue cloth.
Waitrose urged customers NOT to consume the butter, to package it up, and return it to their store urgently.
It said the batches that could contain cloth were best before June 19.
Waitrose said “We are recalling this product due to the potential presence of blue cloth.
“We apologise that it has been necessary to recall this product and for the inconvenience caused.”
The Food Safety Agency (FSA) said that the product was the 500g packs of the butter, and typically sells for £1.75.
The FSA said: “If there is a problem with a food product that means it should not be sold, then it might be ‘withdrawn’ (taken off the shelves) or ‘recalled’ (when customers are asked to return the product).
“The FSA issues Product Withdrawal Information Notices and Product Recall Information Notices to let consumers and local authorities know about problems associated with food.
“In some cases, a ‘Food Alert for Action’ is issued. This provides local authorities with details of specific action to be taken on behalf of consumers.”
The supermarket urged anyone who’s bought it to return it back to their local Waitrose for a refund.
Shoppers can get in touch with Waitrose Customer Care 0800 188 884, Option 4 if they have further concerns or questions.
It did not give any indication as to how the blue cloth got into the spread.
It comes just days after Waitrose put out an alert on its own brand jar of olives out of fear they contain pieces of glass.
The supermarket has pulled Pitted Spanish Queen Olives from the shelves citing that they are “unsafe to eat”.
The retailer urged customers to avoid eating the olives and return them to their local store for a refund.
The shoppers should look out for 113g jars with the best-before date of December 2025.
We apologise that it has been necessary to recall this product and for the inconvenience caused.
Waitrose
Last month another recall was put out by the supermarket over popular product that “could contain pieces of glass”.
The recall was made after the Government’s Food Standards Agency (FSA) issued a national alert regarding Patak’s Aubergine Pickle, which is made by AB World Foods.
“This product may contain pieces of glass which makes it unsafe to eat,” the FSA said in a statement.
It’s feared people could start spitting blood if they cut their mouth or throat if they don’t notice the shards of glass.
The FSA said “AB World Foods is recalling Patak’s Aubergine Pickle because it may contain pieces of glass.
“The possible presence of glass makes this product unsafe to eat.
“The affected product has only been sold in Waitrose and Sainsbury’s.”