Right... for other members of the Pipe Forums lunatic fringe, here's an update on my adventures with the stinking Indo-Chinese sotweed...
I infused half an ounce or so three weeks ago, in a Tupperware container with a tot of Navy rum placed in the middle. This muted the awful taste and aroma but made it so damp I had to tin-dry a couple of pipefuls for a couple of days. After that, it was still awful - underneath the rum I could still taste the burnt chicken left too long on the barbecue, the boiled cabbage and the blocked drains bouquet, but not half as bad as before infusing, and it still needed several relights.
I then tried one third Thuoc Lao mixed with two thirds Tabac Manil Semois La Volute, hoping the strong cigar-like taste would vanquish it. It did, somewhat, and the easy combustability of the Semois did encourage the Thuoc Lao to stay lit - the char-light lasted for the first quarter of the bowl.
Even so, the persistent acridity of the Thuoc Lao still came through, so that the mix tasted and smelled woody, green and sharp-sour like an autumn bonfire, defeating the mellowness of the Semois Burley..
If I ever do this again, I shall only sprinkle a pinch or two, well dried, into a loading of some strongly-flavoured but nicotine-low blend I want to strengthen somewhat.
What else can one reasonably expect of an uncouth rustica that is grown only for its afficionados to get a fast nicotine rush without regard for taste or aroma? Even diluted in a mix, it made me, a fairly nicotine-tolerant smoker, stoned and temporarily unfit for anything useful for an hour or two, and the foul mouth taste just isn't worth the high.
What else to say? It pairs horribly with black coffee, and if this is the same or similar to the stuff that Gudang Garam is made with, I'm not surprised the Indonesians lace it heavily with ground cloves.
Sotweed: that's the only name for it.