A knife fight broke out at a Long Island sushi restaurant Friday, with one angry chef nearly turning a rival into human sashimi.

The violence at the Ichiban Sushi restaurant on Montauk Highway in Oakdale left one of the kitchen combatants so sliced up, he had to be rushed to Southside Hospital. His injuries were not life threatening, police said.

Police busted Kong Chen for assault. It was not clear what caused tempuras to flare.

“It’s OK. Everything is OK. No problem,” manager Jack Chen assured The Post.

“One was sushi chef, one was kitchen chef,” Chen said. “They were both new.”

He added, “I don’t know what happened, but everything is OK.”