He mutters to himself more than them, "...most likely a telepathic race, obviously. Probably farmers. Telepathic farmers." He frowns to himself, looking up again. "Sorry? Oh, right, yes, well, we never do seem to have a shortage of interesting." He follows his double's eyes towards Rose. "Right, past is past. Moving on."
He takes the cup from Ianto, with a nod and a smile. Taking a sip, his eyes widen slightly, and taking another, he makes a small noise of content, eyes closing momentarily. "Well, if that isn't the most..." he pauses, "It's brilliant, best cup of coffee I've had in, well, quite some time." He raises the cup slightly in a salute, before going back to drinking it contentedly, leaning against the counter.