DRUGS worth about £6.5m hidden inside out-of-date frozen chickens were found on their way to a Batley haulage firm.
A lorry travelling to CBS Transport was stopped in Lincolnshire, having set off from the Netherlands.
National Crime Agency officers found more than 90kg of amphetamines in the meat, which had a “use by” date of 2010.
CBS Transport owner Christopher Still, 68, was arrested at his home in Morley the same night, on December 5 last year.
Leeds Crown Court heard officers found about £13,000 in cash hidden in the boot of his car.
Further raids at locations in Batley and Leeds uncovered more frozen chicken stuffed with 15kg of amphetamines.
Still admitted conspiring to import class A drugs, importing class B drugs and possession of class B drugs with intent to supply.
The chicken was impounded by environmental health officers and destroyed.
A 52-year-old Dutch national who was driving the lorry has been bailed pending further enquiries.
Still was jailed for 12-and-a-half years for his role in the plot, which may have been long-running.
David Norris, of the National Crime Agency, said the same frozen chicken appeared to have made several journeys to and from the Netherlands.
He added it was likely these shipments were also a cover for the importation of drugs.
Mr Norris added: “The organised criminal networks responsible for attempting to traffic drugs to the UK should know that the NCA and our law enforcement partners will continue to do all we can to pursue them and disrupt their activities.”