I assume you are familiar with black garlic, which is also fermented. The Thai weed I had bought in A'dam was just as black, but smelled like coffee/ chocolate. If the fermentation didn't go very well, you would have an ugly scent to it. It was not really an upper btw.that black stuff doesnt look so good really ,
one wonders if thats some fermentation gone wrong or something ..
im currently getting some purple pot that has gone black , they are calling it black dragon ,
ive gotten it before , when it was just a dark purple , then black , and now they popped a neat little name to it , lol ..
that seems to happen with pot sometimes , it doesnt mean the folks who grew it came up with it though ,
it may have come from the distributors, just to make it sound cool ..
anyway that black apparent thai stick would need a closer inspection to see why it has gone that color , not very enticing to be honest ....