Yeah, it's in the drawing room by the grate. Be right there.

Apparently my brain is far too simple to grasp the intricate details (according to someone) but the potion's one of that class where there's no way to be sure it's been brewed correctly short of taking it. (Presumably that's if it's close within a certain margin. I'm sure there are ways to brew it so horribly wrong that anyone would know it's not correct. But I didn't offer that option.) Anyway, the point is that if they're off even by a hair, it not only won't be effective it could have lethal consequences. So you see why Poppy's been resistant to the idea.