It's an effort to continue to keep himself upright, especially with the room only growing cozier by the minute with the addition of the smell of brewing tea. The quiet while Martin works is comfortable - yet another point working against him.

He comes back to attention when he's approached with the cup, though, and takes it gladly.

"Wonderful, thank you."

He only gets a better look at it when he starts to lift it, and he pauses for a moment. Gears need an extra moment to turn, but the tea is instantly recognizable. It's not the usual that Martin makes - instead, at one point in Jon's life, it was an entirely different usual. A footnote of time mentioned offhandedly in their letters, and then subsequently forgotten.

He lets out a little breath of a laugh, surprised but no means displeased. The sentiment's clearly struck him deeply; he struggles to articulate it.

"Martin, is this---?" He fails to ask clearly, but offers him a small grin even still, equal parts excited and perplexed.