I picked up some Nicotaina Rustica from Samara and think I may have botched it. I tried diluting to 20% in PG (only). Should have read this thread first! Brought temp to around 120F and it turned liquid. Also brought PG to same temp, then combined and shook like crazy. However, once it cooled, I had huge amounts of sediment at the bottom and along the sides of the bottle. Tried 4-5x heating to around 120F, shaking - not much improvement. Then, out of desperation, I tried heated ultrasonic cleaner for 30 minutes. Slightly better, but not much.
So, I picked up some EverClear (190 proof) and took half the TA/PG and diluted that 50/50 with EverClear. So, should be 45% PG, 45% Everclear and 10% TA now. No more sediment on the sides but large amount of un-dissolved sediment on the bottom.
I wonder if I need to re-order and start over. I would think that the TA should mostly/completely dissolve regardless of the fact that I added the PGA as a second step. I assume this is a solution, not a chemical reaction.
I'll keep trying but am concerned. I've done a lot of heating and shaking so far and there is still a LOT of (fine) sediment at the bottom.