Tonks should have made a mental note and ask Jack for pointers. Or trade tips or something. Or maybe just joke around with him. Either way, she smiled wryly and then chuckled. "A mocha, hey? Good to know." Though the reason why was pretty much only known in Tonks' head.
She leaned her chin on her palm and studied Ianto thoughtfully. Then decided to change the subject. "So what did you do before getting here again?"