The judge said married father-of-four Zaman had told 'many lies' to the jury, adding: 'You remain in complete and utter denial for what you have done.'
Earlier Wilson's heartbroken parents Keith and Margaret Wilson said today that a mere mouthful of the contaminated chicken tikka masala was enough to kill their son.
During a trial that led to his conviction it emerged that Zaman ran up £294,000 debts in his restaurants so was substituting ingredients for cheaper alternatives.
Yet he was still paying for his son to go to the prestigious private St Peter's School in York from his business account.
Wilson died three weeks after a teenage customer at another of Zaman's six restaurants suffered an allergic reaction which required hospital treatment.
The prosecution said the owner had a "reckless and cavalier attitude to risk" and "put profit before safety" at the restaurants he owned.
Zaman, from Huntington, York, denied manslaughter by gross negligence, perverting the course of justice and six food safety offences.
He was found guilty of all charges except perverting course of justice.