Korean ginseng concentrate
Not sure if this helps or not, but I was in Korea last year and we shopped for ginseng. According to my in-laws, most koreans use the highly concentrated red ginseng paste for making their herbal teas, rather than the actual dry root.
We also drove by acres upon acres of cultivated ginseng fields and I am certain that they don't use night soil for fertilizer simply because there were just too many acres growing with too few inhabitants nearby. The fields reminded me of the farm fields of California where grapes or fruit orchards can seem to go on to the horizon. They also cover the growing ginseng with a black plastic tarp because apparently the ginseng need to be shielded from the sun and in a warmer environment in order to gain greater potency. The Korean ginseng industry is nationalized and all the ginseng are processed under strict regulations. South Korea is a very clean country. This is in sharp contrast to China. I don't know how BC ginseng compares to korean ginseng, especially since now a lot of koreans are cultivating it here.
Anyway, I think I have an extra jar of the ginseng concentrate, if you really need it. But it was very expensive. like around US$200 for what looks like a jar of strawberry jam. Kinda like a typical KGFE.