Cheshire Police cordoned off part of Mill Street, in Congleton, for a number of hours following the incident last July.
They became aware of the attack after colleagues took the victim to Congleton War Memorial Hospital.
But it became evident that the man had suffered 35 per cent ‘full-thickness’ burns to his body and he was transferred by ambulance to Manchester’s Wythenshawe Hospital. He still needs daily care at the hospital and has suffered life-changing injuries.
Chef Sihung Hoang left a colleague with 35 per cent burns and lucky to be alive – after pouring four litres of boiling hot oil over his head, chest and arms.
The 57-year-old grabbed the oil – which had been heating on a gas hob – and poured it over the kitchen worker who was bending down after they clashed at Beijing City before fleeing the scene.
The victim was taken to a specialist burns unit where he spent four weeks in an induced coma.
Now the defendant, of no fixed address, has been jailed for nine years after admitting a charge of causing grievous bodily harm with intent.
Police eventually arrested Hoang at a Birmingham betting shop on September 7.
He told officers he poured the oil over his colleague because he was ‘scared’ during the argument.
Following his sentence at Chester Crown Court, Detective Sergeant Simon Mills said: “This was a truly barbaric act, like something out of the Middle Ages.
“Hoang’s cowardly attack has had a devastating impact on the victim who spent three months in the hospital and still has to have daily care for his injuries which have not healed. He has appalling injuries which will scar him for life and also have a significant impact on the rest of his life.
“I hope that the sentence handed down goes some way to providing some closure for the victim.”