It was used by a Kung Fu master to his apprentice in the TV series of the same name;
en.wikipedia.org/wiki/Kung_Fu_(TV_series)
Us "oldies" remember such things.
And, just like Hovis, it's as good today as the first day it was baked.
(That's another one for the oldies)
Equally, OHA is as much as a shit hole as it has every been. Expect the water level to be higher down there right now, the ducks will be horrible and the gloop simply the worst.
There are no quality minerals in that mud bath - of that, I am certain.
Poacher's however, will likely be very pleasant in comparison.
Ian