( He's very clearly amused at Lan Xichen's reaction, the corners of his mouth lifting ever so slightly. He pinches a leaf from another bottle between thumb and forefinger, watching it crumble before abandoning that one to the side. )

Ah, let's not with that. You don't want to poison your new family member after all. And mm? Oh, I just like to cook. Though I don't much get the chance.

( There is a kitchen in Wen Kexing's Ghost Valley. There has to be. But what can be prepared there would not be fit for fine, upstanding young gentlemen. Another vial gets shaken and he hands that one over. ) A kitchen is the heart of a home, after all.