The mystery of how red flecks appeared in a block of butter bought at a Northland supermarket has been solved.
Whangarei Heads resident Tania Whyte sliced into a block of Pams butter last weekend to discover what she thought resembled red flecks of plastic.
However, head of external relations for Foodstuffs, Antoinette Laird said the product was collected on Tuesday and delivered to the supplier.
Read more: Red stuff discovered in block of Pams butter by Whangarei Heads woman
"Preliminary testing suggested the substance had most likely come from the knife that cut the butter as the red flecks were only present on the cut surfaces of the butter. Early investigations suggested the substance was likely to be Teflon from a Teflon covered knife or wax from another product," Ms Laird said.