[ It might be obvious, but the thought of no longer being green fills him with relief and he answers her question readily. ]

About an hour, give or take some minutes. I haven't a watch on me, and thus was unable to record the time exactly.

[ What an oddly specific question and it makes him wonder, eyes opening as he squints suspiciously down at her. ]

Why? You're not thinking of drinking the concoction yourself, are you?

[ Though green would probably be more flattering on her than it was on him.]