His look does not exactly let up, but at least it shifts focus to the offered tin. Severus doesn't seem overtly hostile, but it's clear that he's still annoyed over whatever it was he was annoyed over the last time Harry dropped by. After a moment he extends a hand to take the container, and sets it down on his desk to open and pick through. He does this wordlessly.
no subject
Finally: "Have you spoken to Lupin?"