There it is, a much better subject to focus on than their apparent imminent destruction. He will gladly leap at it with open arms.

"Oh, well" He gestures along as he goes. "This one is very simple. Avocado, shrimp tempura, and cucumber-- and the rice and seaweed, of course. This one has eel, this one has tuna. They're all really quite different. You're supposed to eat them, the rolls - nigiri with your hands, but it's become quite common to use chopsticks. You should only eat sashimi with your chopsticks-- this one, the salmon. And you should only dip the fish."

He's just going to keep going if he's not stopped. Save yourself, Crowley.