[His own smile is a little wry.]

Or if you wanted to tell someone how much you hated them. They work for that, too.

[A very aesthetic expression of distaste.

He snaps the book shut and leans forward, however, pleased by her interest.]

I started it right after I got here--that was a few months ago. Came in with the first batch. I've been collecting samples to grow in the garden I've got on the roof of my building. I have some specimens from my own world there, too.