Thank you for affirming the journey with your own experiences. I would love to Singapore! I wonder if the cod liver oil was a result of some happenstance or typical part of the process or environment since there was such a uniform stench that was consistent? I have not spent much time with the tea a the level where the nuances can be experienced and enjoyed. Many years back a brewed cup of a singular estate tea had been shared with me here and there at a museum where I worked. It was lovely with unexpected layers across the palate. Unfortunately I cannot remember what it was.My absolute favourite Chinese tea is a tiegunyin (oolong) which I bought some years ago from an elderly tea merchant in Singapore.
The unbrewed tea leaf gives off a note of cod liver oil - I was force fed an entire lake of that vile stuff growing up, so its stench is indelibly etched in my olfactory memory.
But OMG, the complexity of that tea ! I have tried lots of oolong teas in search of a similar, but have been unsuccessful so far.
I have a very few vacuum sealed single pot serves left which I am eking out.
So a seashell tang to your chocolate mix is not that far fetched
On the pipe side, perhaps one could say if I have hit a shellfish note, I may be heading in a promising direction with pipe smoking? I enjoyed it immensely. I love aromatics in general from a standpoint of composition and creativity.