Donnie only looks mildly annoyed at the head pat, more focused on trying to tell apart the flavors as he takes another careful bite. Shu makes it sound like a science, and while Donnie can be very particular about textures, in this case things seem to work rather well. Is it possible to salivate more when you're already eating?

"This is amazing..." he says, mostly muffled by food as he continues to chew. He's glad that Shu's so generously provided another helping that can be experimented with soy sauce because he's trying to savor the different flavors in the one without.