"Ah yeah, good question. Yeah, these ones you want to use within a week or two of drying, otherwise they start to lose their effects steadily. Actually, let me write that down - I've been putting together a guide to these things for people and I keep running into stuff I forgot to put in it."

Leon produces a pen and a notebook from his bag, which he starts jotting notes down in based on their conversation. Once the scratching of pen on paper stops, he puts them away and continues.

"Where was I? Oh, right. You'll wanna mix red and green herbs in a ratio of one to one by weight for best results, but in a pinch you can estimate and it'll turn out fine as long as you're about right. You got that? There's just one of these left, after this."