Ozden admitted the culpable homicide of his friend in April last year
Hidayet Ozden repeatedly punched Shahzad Shah and hit him with a pot handle during a struggle.
Mr Shah lashed out after being attacked and hit Ozden with a pot during the brawl at the Mirchi Indian takeaway in Mintlaw, Aberdeenshire.
Ozden, of Falkirk, Stirlingshire, admitted the culpable homicide of his friend in April last year.
He died of a very serious heart condition, of which you were unaware
Judge Graham Buchanan
Yesterday, at the High Court in Glasgow, Judge Graham Buchanan told Ozden that he accepted the accused "did not intend to kill".
The judge added: "He died of a very serious heart condition, of which you were unaware. He could have died at any point if placed in a stressful situation. Mr Shah was a close friend and business colleague of yours for years. I accept you were subject to a degree of provocation by Mr Shah.
"Mr Shah suffered a fractured cheekbone and a small bone in his neck was also broken. None of the injuries inflicted contributed directly to his death. However, a man has lost his life and his family has been left devastated."
Shahzad Shah appeared to be in shock
The court heard the attack happened amid "simmering tension" between the two men.
Ozden, 53, attacked dad-of-three Mr Shah, who was 56, after he queried whether the chicken order was on the bone or not, and demanded the customer should be phoned to check. He was originally charged with murder but admitted culpable homicide. The court heard that Ozden pushed and slapped the chef, who picked up a pot and hit him back, causing the handle to break off.
Ozden then punched his victim, took the pot handle from him and struck him on the head and body with the makeshift weapon. He also forcibly grabbed the chef by the neck and pushed him against a wall.
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Ozden went to his aid assisting with mouth-to-mouth resuscitation
Mr Shah appeared to be in shock and Ozden was told to leave, but returned a minute or so later and renewed his attack on his victim who then collapsed.
Ozden also went to his aid assisting with mouth-to-mouth resuscitation.
Defence QC Ian Duguid said: "Mr Ozden has never tried to minimise his involvement in his friend's death. He wants to express his regret to Mr Shah's family."
He handed Judge Buchanan a photograph of Mr Shah's diseased heart and said: "He was in such poor health. He was vulnerable to any kind of stress and it was that that brought about his death."