I would have tossed the food, too. Seems a pretty sensible thing to do.
I would throw the food at the bartender, and make sure my concealed carry was comfortably adjusted.
Not if he paid $80 .. he should have offered the sushi to some nearby cockroaches, that is, other than the bartender.
What is the name and address of the restaurant?
Do they support the actions of their employee?
I would have done the same thing, I would be VERY suspect of the safety of the product they serve.