It's clear that Khan's not completely mollified, but the passive acceptance isn't what he'd been expecting - it's enough to focus that aggression elsewhere, to divert his attention. The cup in his hands is warm, and suddenly tea seems like a very good thing - but then he couldn't remember the last time he'd had anything to eat or drink. On Qo'noS, perhaps.

(It would explain why he's been healing so sluggishly - he needs to fuel the process somehow, and stolen Starfleet rations don't last forever.)

Still, he takes a sip with reservation, still watching. It's not drugged, but he's still wondering what the doctor actually hopes to accomplish - or is it simply a case of good manners? Has it really been so long since he felt civilized that he'd forgotten the customs?

"Obviously. Why?"