It's the true surprise, when Victor finally figures it out, that's the best.

Almost blinding, dragging Yuri's mouth into a full unchecked smile, even if he ducks his head and looks up through his lashes, just to see it, just to be the courier between where this all started and sharing his own surprise and delight at receiving them with Victor. Getting to see Victor filled with the same absolutely unprepared recognition.

It doesn't seem like there is anything else in the world, not of merit, when Victor's blue eyes are wide and he's suddenly looking so completely focused at Yuri, engaged in a way they hadn't been seconds ago, humoring Yuri but more by patient politeness than interest. "Yurio--"

Except that's true, with being exactly true. "His grandfather made them." How and why, he's still not entirely sure, other than that Yurio must have truly loved his mother's katsudon. "He--" There's a small pause, and the faintest small bob of his head, with a sort of floating shrug, like it might still be half more question than certainties, like the whole of the last day and a half feels sometimes now. "He gave them to me."

Another slightly small beat. "For my birthday." Sort of? Offhandly?
With that thrown in there as he'd thrown the bag on top of Yuri in the snow?

He still needed to tell his mother in the morning. To make a list of what all his mother used.