Yes and no. I found out that if you re-x your spice and let it cool down slowly to room temp, that you will find yellow residue sticking on the bodem of the dish. Then i pour the remaining solvent in an other dish and put it in the refrigerator (this looks real clear) i leave this dish 4 hours in de fridge. Then you will find that most has crystallized already and it looks pure white. Now i take it out the refrigerator pour the remaining solvent back in the dish with the yellow residue and stick that 1 in de freezer. And leave the 1 out of the refrigerator to dry. This way i got pure white spice and the day after also yellow spice. White spice i freebase and yellow spice i make changa with.